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Lecture 2: SOC Brain as Something
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Exoplanet transit spectroscopy_using_wfc3
Exoplanet transit spectroscopy_using_wfc3
Sérgio Sacani
The discovery1 of 1I/2017 U1 (1I/‘Oumuamua) has provided the first glimpse of a planetesimal born in another planetary system. This interloper exhibits a variable colour within a range that is broadly consistent with local small bodies, such as the P- and D-type asteroids, Jupiter Trojans and dynamically excited Kuiper belt objects2–7 . 1I/‘Oumuamua appears unusually elongated in shape, with an axial ratio exceeding 5:1 (refs 1,4,5,8). Rotation period estimates are inconsistent and varied, with reported values between 6.9 and 8.3 h (refs 4–6,9). Here, we analyse all the available optical photometry data reported to date. No single rotation period can explain the exhibited brightness variations. Rather, 1I/‘Oumuamua appears to be in an excited rotational state undergoing nonprincipal axis rotation, or tumbling. A satisfactory solution has apparent lightcurve frequencies of 0.135 and 0.126 h−1 and implies a longest-to-shortest axis ratio of ≳5:1, although the available data are insufficient to uniquely constrain the true frequencies and shape. Assuming a body that responds to non-principal axis rotation in a similar manner to Solar System asteroids and comets, the timescale to damp 1I/‘Oumuamua’s tumbling is at least one billion years. 1I/‘Oumuamua was probably set tumbling within its parent planetary system and will remain tumbling well after it has left ours.
The tumbling rotational state of 1I/‘Oumuamua
The tumbling rotational state of 1I/‘Oumuamua
Sérgio Sacani
estudo com a matéria escura para explicar por que existem menos galáxias satélites ao redor da Via Láctea do que era esperado.
Using the milk_way_satellites_to_study_interactions_between_cold_dark_matter_...
Using the milk_way_satellites_to_study_interactions_between_cold_dark_matter_...
Sérgio Sacani
ESC Talk on the seminal paper from 1967 by Partidge & Peebles, where they predicted the visibilty of galaxies in the early universe by the virtue of their strong Lyman Alpha emission.
Are Young Galaxies Visible? - Partridge & Peebles 1967, ApJ 147, 686
Are Young Galaxies Visible? - Partridge & Peebles 1967, ApJ 147, 686
Edmund Christian Herenz
1108.2508v1
1108.2508v1
Sérgio Sacani
Estudo mostra como as galáxias menores ajudaram no processo de reionização no início do universo.
The birth of_a_galaxy_propelling_reionisation_with_the_faintest_galaxies
The birth of_a_galaxy_propelling_reionisation_with_the_faintest_galaxies
Sérgio Sacani
A spectroscopic sample_of_massive_galaxies
A spectroscopic sample_of_massive_galaxies
Sérgio Sacani
Artigo descreve o que são as supernovas do Tipo Iax, um novo tipo de supernova recentemente descoberto.
Type iax supernovae_a_new_class_of_stellar_explosion
Type iax supernovae_a_new_class_of_stellar_explosion
Sérgio Sacani
Recommandé
Exoplanet transit spectroscopy_using_wfc3
Exoplanet transit spectroscopy_using_wfc3
Sérgio Sacani
The discovery1 of 1I/2017 U1 (1I/‘Oumuamua) has provided the first glimpse of a planetesimal born in another planetary system. This interloper exhibits a variable colour within a range that is broadly consistent with local small bodies, such as the P- and D-type asteroids, Jupiter Trojans and dynamically excited Kuiper belt objects2–7 . 1I/‘Oumuamua appears unusually elongated in shape, with an axial ratio exceeding 5:1 (refs 1,4,5,8). Rotation period estimates are inconsistent and varied, with reported values between 6.9 and 8.3 h (refs 4–6,9). Here, we analyse all the available optical photometry data reported to date. No single rotation period can explain the exhibited brightness variations. Rather, 1I/‘Oumuamua appears to be in an excited rotational state undergoing nonprincipal axis rotation, or tumbling. A satisfactory solution has apparent lightcurve frequencies of 0.135 and 0.126 h−1 and implies a longest-to-shortest axis ratio of ≳5:1, although the available data are insufficient to uniquely constrain the true frequencies and shape. Assuming a body that responds to non-principal axis rotation in a similar manner to Solar System asteroids and comets, the timescale to damp 1I/‘Oumuamua’s tumbling is at least one billion years. 1I/‘Oumuamua was probably set tumbling within its parent planetary system and will remain tumbling well after it has left ours.
The tumbling rotational state of 1I/‘Oumuamua
The tumbling rotational state of 1I/‘Oumuamua
Sérgio Sacani
estudo com a matéria escura para explicar por que existem menos galáxias satélites ao redor da Via Láctea do que era esperado.
Using the milk_way_satellites_to_study_interactions_between_cold_dark_matter_...
Using the milk_way_satellites_to_study_interactions_between_cold_dark_matter_...
Sérgio Sacani
ESC Talk on the seminal paper from 1967 by Partidge & Peebles, where they predicted the visibilty of galaxies in the early universe by the virtue of their strong Lyman Alpha emission.
Are Young Galaxies Visible? - Partridge & Peebles 1967, ApJ 147, 686
Are Young Galaxies Visible? - Partridge & Peebles 1967, ApJ 147, 686
Edmund Christian Herenz
1108.2508v1
1108.2508v1
Sérgio Sacani
Estudo mostra como as galáxias menores ajudaram no processo de reionização no início do universo.
The birth of_a_galaxy_propelling_reionisation_with_the_faintest_galaxies
The birth of_a_galaxy_propelling_reionisation_with_the_faintest_galaxies
Sérgio Sacani
A spectroscopic sample_of_massive_galaxies
A spectroscopic sample_of_massive_galaxies
Sérgio Sacani
Artigo descreve o que são as supernovas do Tipo Iax, um novo tipo de supernova recentemente descoberto.
Type iax supernovae_a_new_class_of_stellar_explosion
Type iax supernovae_a_new_class_of_stellar_explosion
Sérgio Sacani
Scientific exploration of mars
Scientific exploration of mars
Brian Thompson
Artigo descreve a descoberta de 200 fontes no universo distante relacionadas a proto-aglomerados de galáxias no universo distante.
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Sérgio Sacani
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
Sérgio Sacani
Artigo descreve como a sonda Rosetta e o módulo Philae descobriram que o cometa Churyumov-Gerasimenko não é magnetizado, contrariando uma teoria da formação do Sistema Solar.
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
Sérgio Sacani
We present ∼ 800 days of photometric monitoring of Boyajian’s Star (KIC 8462852) from the AllSky Automated Survey for Supernovae (ASAS-SN) and ∼ 4000 days of monitoring from the All Sky Automated Survey (ASAS). We show that from 2015 to the present the brightness of Boyajian’s Star has steadily decreased at a rate of 6.3 ± 1.4 mmag yr−1 , such that the star is now 1.5% fainter than it was in February 2015. Moreover, the longer time baseline afforded by ASAS suggests that Boyajian’s Star has also undergone two brightening episodes in the past 11 years, rather than only exhibiting a monotonic decline. We analyze a sample of ∼ 1000 comparison stars of similar brightness located in the same ASAS-SN field and demonstrate that the recent fading is significant at & 99.4% confidence. The 2015 − 2017 dimming rate is consistent with that measured with Kepler data for the time period from 2009 to 2013. This long-term variability is difficult to explain with any of the physical models for the star’s behavior proposed to date
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
Sérgio Sacani
During the formation and evolution of the Solar System, significant numbers of cometary and asteroidal bodies were ejected into interstellar space1,2. It is reasonable to expect that the same happened for planetary systems other than our own. Detection of such interstellar objects would allow us to probe the planetesimal formation processes around other stars, possibly together with the effects of long-term exposure to the interstellar medium. 1I/2017 U1 ‘Oumuamua is the first known interstellar object, discovered by the Pan-STARRS1 telescope in October 2017 (ref. 3). The discovery epoch photometry implies a highly elongated body with radii of ~ 200 × 20 m when a comet-like geometric albedo of 0.04 is assumed. The observable interstellar object population is expected to be dominated by comet-like bodies in agreement with our spectra, yet the reported inactivity of 'Oumuamua implies a lack of surface ice. Here, we report spectroscopic characterization of ‘Oumuamua, finding it to be variable with time but similar to organically rich surfaces found in the outer Solar System. We show that this is consistent with predictions of an insulating mantle produced by long-term cosmic ray exposure4. An internal icy composition cannot therefore be ruled out by the lack of activity, even though ‘Oumuamua passed within 0.25 au of the Sun.
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Sérgio Sacani
Eso1138
Eso1138
Sérgio Sacani
Transient features in_a_titan_sea
Transient features in_a_titan_sea
Sérgio Sacani
The 27 Myr periodicity in the fossil extinction record has been con- firmed in modern data bases dating back 500 Myr, which is twice the time interval of the original analysis from thirty years ago. The surprising regularity of this period has been used to reject the Nemesis model. A second model based on the sun’s vertical galactic oscillations has been challenged on the basis of an inconsistency in period and phasing. The third astronomical model originally proposed to explain the periodicity is the Planet X model in which the period is associated with the perihelion precession of the inclined orbit of a trans-Neptunian planet. Recently, and unrelated to mass extinctions, a trans-Neptunian super-Earth planet has been proposed to explain the observation that the inner Oort cloud objects Sedna and 2012VP113 have perihelia that lie near the ecliptic plane. In this Letter we reconsider the Planet X model in light of the confluence of the modern palaeontological and outer solar system dynamical evidence. Key Words: astrobiology - planets and satellites - Kuiper belt: general - comets: general
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Sérgio Sacani
Type Ia supernovae, with their remarkably homogeneous light curves and spectra, have been used as standardizable candles to measure the accelerating expansion of the Universe. Yet, their progenitors remain elusive. Common explanations invoke a degenerate star (white dwarf) which explodes upon reaching close to the Chandrasekhar limit, by either steadily accreting mass from a companion star or violently merging with another degenerate star. We show that circumstellar interaction in young Galactic supernova remnants can be used to distinguish between these single and double degenerate progenitor scenarios. Here we propose a new diagnostic, the Surface Brightness Index, which can be computed from theory and compared with Chandra and VLA observations. We use this method to demonstrate that a double degenerate progenitor can explain the decades-long ux rise and size increase of the youngest known Galactic SNR G1.9+0.3. We disfavor a single degenerate scenario. We attribute the observed properties to the interaction between a steep ejecta prole and a constant density environment. We suggest using the upgraded VLA to detect circumstellar interaction in the remnants of historical Type Ia supernovae in the Local Group of galaxies. This may settle the long-standing debate over their progenitors. Subject headings: ISM: supernova remnants | radio continuum: general | X-rays: general | bi- naries: general | circumstellar matter | supernovae: general | ISM: individual objects(SNR G1.9+0.3)
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
Sérgio Sacani
A super earth transiting a naked-eye star
A super earth transiting a naked-eye star
Sérgio Sacani
We present long-baseline Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 870 m continuum emission from the nearest gas-rich protoplanetary disk, around TW Hya, that trace millimeter-sized particles down to spatial scales as small as 1 AU (20 mas). These data reveal a series of concentric ring-shaped substructures in the form of bright zones and narrow dark annuli (1{6AU) with modest contrasts (5{30%). We associate these features with concentrations of solids that have had their inward radial drift slowed or stopped, presumably at local gas pressure maxima. No signicant non-axisymmetric structures are detected. Some of the observed features occur near temperatures that may be associated with the condensation fronts of major volatile species, but the relatively small brightness contrasts may also be a consequence of magnetized disk evolution (the so-called zonal ows). Other features, particularly a narrow dark annulus located only 1 AU from the star, could indicate interactions between the disk and young planets. These data signal that ordered substructures on AU scales can be common, fundamental factors in disk evolution, and that high resolution microwave imaging can help characterize them during the epoch of planet formation. Keywords: protoplanetary disks | planet-disk interactions | stars: individual (TW Hydrae)
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Sérgio Sacani
Artigo descreve o estudo feito nos aglomerados globulares da galáxia Sagitário A, mostrando o lado negro desses objetos.
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Sérgio Sacani
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
Sérgio Sacani
exoplanet and its research details,
THE SEARCH FOR ANOTHER EARTH
THE SEARCH FOR ANOTHER EARTH
Piyush Anand
Mass vs weight, determining g
6.5 hsw what lies beneath
6.5 hsw what lies beneath
mrrayner
Talk of the "International Workshop on Paolo Farinella (1953-2000): the Scientists, the man", Pisa, 14-16 June 2010
N5. Morbidelli - "Asteroids falling into the sun"
N5. Morbidelli - "Asteroids falling into the sun"
IAPS
Past studies have identified a spatially extended excess of ∼1-3 GeV gamma rays from the region surrounding the Galactic Center, consistent with the emission expected from annihilating dark matter. We revisit and scrutinize this signal with the intention of further constraining its characteristics and origin. By applying cuts to the Fermi event parameter CTBCORE, we suppress the tails of the point spread function and generate high resolution gamma-ray maps, enabling us to more easily separate the various gamma-ray components. Within these maps, we find the GeV excess to be robust and highly statistically significant, with a spectrum, angular distribution, and overall normalization that is in good agreement with that predicted by simple annihilating dark matter models. For example, the signal is very well fit by a 36-51 GeV dark matter particle annihilating to b ¯b with an annihilation cross section of σv = (1−3)×10−26 cm3 /s (normalized to a local dark matter density of 0.4 GeV/cm3 ). Furthermore, we confirm that the angular distribution of the excess is approximately spherically symmetric and centered around the dynamical center of the Milky Way (within ∼0.05◦ of Sgr A∗ ), showing no sign of elongation along the Galactic Plane. The signal is observed to extend to at least ' 10◦ from the Galactic Center, disfavoring the possibility that this emission originates from millisecond pulsars.
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
Sérgio Sacani
To test alternative hypotheses for the behavior of KIC 8462852, we obtained measurements of the star over a wide wavelength range from the UV to the mid-infrared from October 2015 through December 2016, using Swift, Spitzer and at AstroLAB IRIS. The star faded in a manner similar to the longterm fading seen in Kepler data about 1400 days previously. The dimming rate for the entire period reported is 22.1 ± 9.7 milli-mag yr−1 in the Swift wavebands, with amounts of 21.0 ± 4.5 mmag in the groundbased B measurements, 14.0 ± 4.5 mmag in V , and 13.0 ± 4.5 in R, and a rate of 5.0 ± 1.2 mmag yr−1 averaged over the two warm Spitzer bands. Although the dimming is small, it is seen at & 3 σ by three different observatories operating from the UV to the IR. The presence of long-term secular dimming means that previous SED models of the star based on photometric measurements taken years apart may not be accurate. We find that stellar models with Tef f = 7000 - 7100 K and AV ∼ 0.73 best fit the Swift data from UV to optical. These models also show no excess in the near-simultaneous Spitzer photometry at 3.6 and 4.5 µm, although a longer wavelength excess from a substantial debris disk is still possible (e.g., as around Fomalhaut). The wavelength dependence of the fading favors a relatively neutral color (i.e., RV & 5, but not flat across all the bands) compared with the extinction law for the general ISM (RV = 3.1), suggesting that the dimming arises from circumstellar material
EXTINCTION AND THE DIMMING OF KIC 8462852
EXTINCTION AND THE DIMMING OF KIC 8462852
Sérgio Sacani
We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period ( 1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler- 1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1:060:01 RJup it is also the largest CBP to date. The planet produced three transits in the light-curve of Kepler- 1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass to be 1:520:65 MJup. The planet revolves around an 11-day period eclipsing binary consisting of two Solarmass stars on a slightly inclined, mildly eccentric (ebin = 0:16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth’s, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
Sérgio Sacani
Asean
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Shafqat Malik
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Arrange holiday new
H00202592
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Tendances
Scientific exploration of mars
Scientific exploration of mars
Brian Thompson
Artigo descreve a descoberta de 200 fontes no universo distante relacionadas a proto-aglomerados de galáxias no universo distante.
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Sérgio Sacani
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
Sérgio Sacani
Artigo descreve como a sonda Rosetta e o módulo Philae descobriram que o cometa Churyumov-Gerasimenko não é magnetizado, contrariando uma teoria da formação do Sistema Solar.
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
Sérgio Sacani
We present ∼ 800 days of photometric monitoring of Boyajian’s Star (KIC 8462852) from the AllSky Automated Survey for Supernovae (ASAS-SN) and ∼ 4000 days of monitoring from the All Sky Automated Survey (ASAS). We show that from 2015 to the present the brightness of Boyajian’s Star has steadily decreased at a rate of 6.3 ± 1.4 mmag yr−1 , such that the star is now 1.5% fainter than it was in February 2015. Moreover, the longer time baseline afforded by ASAS suggests that Boyajian’s Star has also undergone two brightening episodes in the past 11 years, rather than only exhibiting a monotonic decline. We analyze a sample of ∼ 1000 comparison stars of similar brightness located in the same ASAS-SN field and demonstrate that the recent fading is significant at & 99.4% confidence. The 2015 − 2017 dimming rate is consistent with that measured with Kepler data for the time period from 2009 to 2013. This long-term variability is difficult to explain with any of the physical models for the star’s behavior proposed to date
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
Sérgio Sacani
During the formation and evolution of the Solar System, significant numbers of cometary and asteroidal bodies were ejected into interstellar space1,2. It is reasonable to expect that the same happened for planetary systems other than our own. Detection of such interstellar objects would allow us to probe the planetesimal formation processes around other stars, possibly together with the effects of long-term exposure to the interstellar medium. 1I/2017 U1 ‘Oumuamua is the first known interstellar object, discovered by the Pan-STARRS1 telescope in October 2017 (ref. 3). The discovery epoch photometry implies a highly elongated body with radii of ~ 200 × 20 m when a comet-like geometric albedo of 0.04 is assumed. The observable interstellar object population is expected to be dominated by comet-like bodies in agreement with our spectra, yet the reported inactivity of 'Oumuamua implies a lack of surface ice. Here, we report spectroscopic characterization of ‘Oumuamua, finding it to be variable with time but similar to organically rich surfaces found in the outer Solar System. We show that this is consistent with predictions of an insulating mantle produced by long-term cosmic ray exposure4. An internal icy composition cannot therefore be ruled out by the lack of activity, even though ‘Oumuamua passed within 0.25 au of the Sun.
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Sérgio Sacani
Eso1138
Eso1138
Sérgio Sacani
Transient features in_a_titan_sea
Transient features in_a_titan_sea
Sérgio Sacani
The 27 Myr periodicity in the fossil extinction record has been con- firmed in modern data bases dating back 500 Myr, which is twice the time interval of the original analysis from thirty years ago. The surprising regularity of this period has been used to reject the Nemesis model. A second model based on the sun’s vertical galactic oscillations has been challenged on the basis of an inconsistency in period and phasing. The third astronomical model originally proposed to explain the periodicity is the Planet X model in which the period is associated with the perihelion precession of the inclined orbit of a trans-Neptunian planet. Recently, and unrelated to mass extinctions, a trans-Neptunian super-Earth planet has been proposed to explain the observation that the inner Oort cloud objects Sedna and 2012VP113 have perihelia that lie near the ecliptic plane. In this Letter we reconsider the Planet X model in light of the confluence of the modern palaeontological and outer solar system dynamical evidence. Key Words: astrobiology - planets and satellites - Kuiper belt: general - comets: general
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Sérgio Sacani
Type Ia supernovae, with their remarkably homogeneous light curves and spectra, have been used as standardizable candles to measure the accelerating expansion of the Universe. Yet, their progenitors remain elusive. Common explanations invoke a degenerate star (white dwarf) which explodes upon reaching close to the Chandrasekhar limit, by either steadily accreting mass from a companion star or violently merging with another degenerate star. We show that circumstellar interaction in young Galactic supernova remnants can be used to distinguish between these single and double degenerate progenitor scenarios. Here we propose a new diagnostic, the Surface Brightness Index, which can be computed from theory and compared with Chandra and VLA observations. We use this method to demonstrate that a double degenerate progenitor can explain the decades-long ux rise and size increase of the youngest known Galactic SNR G1.9+0.3. We disfavor a single degenerate scenario. We attribute the observed properties to the interaction between a steep ejecta prole and a constant density environment. We suggest using the upgraded VLA to detect circumstellar interaction in the remnants of historical Type Ia supernovae in the Local Group of galaxies. This may settle the long-standing debate over their progenitors. Subject headings: ISM: supernova remnants | radio continuum: general | X-rays: general | bi- naries: general | circumstellar matter | supernovae: general | ISM: individual objects(SNR G1.9+0.3)
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
Sérgio Sacani
A super earth transiting a naked-eye star
A super earth transiting a naked-eye star
Sérgio Sacani
We present long-baseline Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 870 m continuum emission from the nearest gas-rich protoplanetary disk, around TW Hya, that trace millimeter-sized particles down to spatial scales as small as 1 AU (20 mas). These data reveal a series of concentric ring-shaped substructures in the form of bright zones and narrow dark annuli (1{6AU) with modest contrasts (5{30%). We associate these features with concentrations of solids that have had their inward radial drift slowed or stopped, presumably at local gas pressure maxima. No signicant non-axisymmetric structures are detected. Some of the observed features occur near temperatures that may be associated with the condensation fronts of major volatile species, but the relatively small brightness contrasts may also be a consequence of magnetized disk evolution (the so-called zonal ows). Other features, particularly a narrow dark annulus located only 1 AU from the star, could indicate interactions between the disk and young planets. These data signal that ordered substructures on AU scales can be common, fundamental factors in disk evolution, and that high resolution microwave imaging can help characterize them during the epoch of planet formation. Keywords: protoplanetary disks | planet-disk interactions | stars: individual (TW Hydrae)
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Sérgio Sacani
Artigo descreve o estudo feito nos aglomerados globulares da galáxia Sagitário A, mostrando o lado negro desses objetos.
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Sérgio Sacani
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
Sérgio Sacani
exoplanet and its research details,
THE SEARCH FOR ANOTHER EARTH
THE SEARCH FOR ANOTHER EARTH
Piyush Anand
Mass vs weight, determining g
6.5 hsw what lies beneath
6.5 hsw what lies beneath
mrrayner
Talk of the "International Workshop on Paolo Farinella (1953-2000): the Scientists, the man", Pisa, 14-16 June 2010
N5. Morbidelli - "Asteroids falling into the sun"
N5. Morbidelli - "Asteroids falling into the sun"
IAPS
Past studies have identified a spatially extended excess of ∼1-3 GeV gamma rays from the region surrounding the Galactic Center, consistent with the emission expected from annihilating dark matter. We revisit and scrutinize this signal with the intention of further constraining its characteristics and origin. By applying cuts to the Fermi event parameter CTBCORE, we suppress the tails of the point spread function and generate high resolution gamma-ray maps, enabling us to more easily separate the various gamma-ray components. Within these maps, we find the GeV excess to be robust and highly statistically significant, with a spectrum, angular distribution, and overall normalization that is in good agreement with that predicted by simple annihilating dark matter models. For example, the signal is very well fit by a 36-51 GeV dark matter particle annihilating to b ¯b with an annihilation cross section of σv = (1−3)×10−26 cm3 /s (normalized to a local dark matter density of 0.4 GeV/cm3 ). Furthermore, we confirm that the angular distribution of the excess is approximately spherically symmetric and centered around the dynamical center of the Milky Way (within ∼0.05◦ of Sgr A∗ ), showing no sign of elongation along the Galactic Plane. The signal is observed to extend to at least ' 10◦ from the Galactic Center, disfavoring the possibility that this emission originates from millisecond pulsars.
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
Sérgio Sacani
To test alternative hypotheses for the behavior of KIC 8462852, we obtained measurements of the star over a wide wavelength range from the UV to the mid-infrared from October 2015 through December 2016, using Swift, Spitzer and at AstroLAB IRIS. The star faded in a manner similar to the longterm fading seen in Kepler data about 1400 days previously. The dimming rate for the entire period reported is 22.1 ± 9.7 milli-mag yr−1 in the Swift wavebands, with amounts of 21.0 ± 4.5 mmag in the groundbased B measurements, 14.0 ± 4.5 mmag in V , and 13.0 ± 4.5 in R, and a rate of 5.0 ± 1.2 mmag yr−1 averaged over the two warm Spitzer bands. Although the dimming is small, it is seen at & 3 σ by three different observatories operating from the UV to the IR. The presence of long-term secular dimming means that previous SED models of the star based on photometric measurements taken years apart may not be accurate. We find that stellar models with Tef f = 7000 - 7100 K and AV ∼ 0.73 best fit the Swift data from UV to optical. These models also show no excess in the near-simultaneous Spitzer photometry at 3.6 and 4.5 µm, although a longer wavelength excess from a substantial debris disk is still possible (e.g., as around Fomalhaut). The wavelength dependence of the fading favors a relatively neutral color (i.e., RV & 5, but not flat across all the bands) compared with the extinction law for the general ISM (RV = 3.1), suggesting that the dimming arises from circumstellar material
EXTINCTION AND THE DIMMING OF KIC 8462852
EXTINCTION AND THE DIMMING OF KIC 8462852
Sérgio Sacani
We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period ( 1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler- 1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1:060:01 RJup it is also the largest CBP to date. The planet produced three transits in the light-curve of Kepler- 1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass to be 1:520:65 MJup. The planet revolves around an 11-day period eclipsing binary consisting of two Solarmass stars on a slightly inclined, mildly eccentric (ebin = 0:16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth’s, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
Sérgio Sacani
Tendances
(20)
Scientific exploration of mars
Scientific exploration of mars
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Planck intermediate results_high_redshift_infrared_galaxy_overdensity_candida...
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
Candels the correlation_between_galaxy_morphology_and_star_formation_activity...
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
The nonmagnetic nucleus_of_comet_67_p_churyumov_gerasimenko
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
WHERE IS THE FLUX GOING? THE LONG-TERM PHOTOMETRIC VARIABILITY OF BOYAJIAN’S ...
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U...
Eso1138
Eso1138
Transient features in_a_titan_sea
Transient features in_a_titan_sea
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Periodic mass extinctions_and_the_planet_x_model_reconsidered
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
Young remmants of_type_ia_supernovae_and_their_progenitors_a_study_of_snr_g19_03
A super earth transiting a naked-eye star
A super earth transiting a naked-eye star
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Ringed structure and_a_gap_at_1_au_in_the_nearest_protoplanetary_disk
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Observational evidence for_a_dark_side_to_ngc5128_globular_cluster_system
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
Kepler 413b a_slightly_misaligned_neptune_size_transiting_circumbinary_planet
THE SEARCH FOR ANOTHER EARTH
THE SEARCH FOR ANOTHER EARTH
6.5 hsw what lies beneath
6.5 hsw what lies beneath
N5. Morbidelli - "Asteroids falling into the sun"
N5. Morbidelli - "Asteroids falling into the sun"
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
The characterization of_the_gamma_ray_signal_from_the_central_milk_way_a_comp...
EXTINCTION AND THE DIMMING OF KIC 8462852
EXTINCTION AND THE DIMMING OF KIC 8462852
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
Kepler 1647b the_largest_and_longest_period_kepler_transiting_circumbinary_pl...
En vedette
Asean
Asean
Shafqat Malik
Arrange holiday new
Arrange holiday new
H00202592
Lecture series by Prof. Takashi Ikegami.
Lecture4
Lecture4
mizoka
عرض تقديمي لكرة القدم
عرض تقديمي لكرة القدم
H00202592
Blaines Haven 2010 presentation
Blaines Haven 2010 presentation
blaineshaven
Aussie current ibramed
Aussie current ibramed
ACN
Highlighting
Highlighting
cwwcww23
Physical therapy, electric current, electrodes, Russian Corinth, tens, Fes, physical rehabilitation, and sports medicine, chiropractic ,physician, money factor, distributor, Florida, Miami, ultrasound, therapy, ultrasound therapy,aesthetic,Current frequency, four channels, two channels, portable ultrasound, portable ultrasound therapy, ultrasound therapy equipment, stim unit , muscle stimulator, therapeutic ultrasound, ultrasound gel ,ibramed,ibramedusa,ibramedus,qs health ,qshealth,sonofocus,sonopulse,sonopulse ll, sonopulse lll, sonopulse compact 1 ou 3 MHZ ,sonopeel,neurodyn aussie sport,neurodyn 10 channels,neurodin high volt,neurodyn,neurodyn ll,neurodyn lll,neurodyn esthetic,neurodyn compact,neurodyn evolution,neurovector,neurodyn portable tens,neurodyn portable tens/fes,hf ibramed,striat,dermosteam,dermotonus esthetic,dermotonus slim,laserpulse,thermopulse,thermopulse compact,www.ibramedusa.com.
comparison of the analgesic efficacy of medium-frequency alternating current ...
comparison of the analgesic efficacy of medium-frequency alternating current ...
ACN
Variation in blood pressure
Variation in blood pressure
ACN
This two-day Conference will provide the clinician with evidence based utilization of electrophysical agents (EPAs) including neuromuscular electrical stimulation (NMES), electro-pain modulation (TENS), functional electrical stimulation (FES), and ultrasound. This will be accomplished through a combination of lecture and hands-on workshop sessions aimed at identifying the indications for and evidence-based use of these electrophysical agents. Day 1 will consist of lectures addressing the physiologic basis and biophysical properties of EPAs including current best evidence for use, administration, parameter selection, and integration of EPAs into the complete patient care plan. Techniques to be demonstrated and practiced during Day 2 workshops will include NMES for muscle training and strengthening including functional clinical applications to a variety of musculoskeletal diagnoses, identification of proper dosing with NMES, use and progression of FES in various populations, selection and rationale for use of electropain modulation and ultrasound. All speakers are internationally recognized for their clinical utilization, research, and peer-reviewed publications in the respective EPAs.
Ibramed convention program workshop sessions 2015
Ibramed convention program workshop sessions 2015
ACN
Neurodyn Aussie Sport is muscle stimulator device for applying electrical current via electrodes in direct contact with the patient. All the information related to the parameters selected by the physiotherapist will be shown in the alphanumeric liquid crystal display.
Ibramed Neuroryn Aussie sport presentation
Ibramed Neuroryn Aussie sport presentation
ACN
13002
13002
ACN
7001
7001
ACN
A Comparison of the Analgesic Efficacy of medium-frequency alternating Current and TENS 2009
A Comparison of the Analgesic Efficacy of medium-frequency alternating Curren...
A Comparison of the Analgesic Efficacy of medium-frequency alternating Curren...
ACN
HSP for teachers
Hsp bio edit
Hsp bio edit
Penunggu Hujung Dunia
En vedette
(15)
Asean
Asean
Arrange holiday new
Arrange holiday new
Lecture4
Lecture4
عرض تقديمي لكرة القدم
عرض تقديمي لكرة القدم
Blaines Haven 2010 presentation
Blaines Haven 2010 presentation
Aussie current ibramed
Aussie current ibramed
Highlighting
Highlighting
comparison of the analgesic efficacy of medium-frequency alternating current ...
comparison of the analgesic efficacy of medium-frequency alternating current ...
Variation in blood pressure
Variation in blood pressure
Ibramed convention program workshop sessions 2015
Ibramed convention program workshop sessions 2015
Ibramed Neuroryn Aussie sport presentation
Ibramed Neuroryn Aussie sport presentation
13002
13002
7001
7001
A Comparison of the Analgesic Efficacy of medium-frequency alternating Curren...
A Comparison of the Analgesic Efficacy of medium-frequency alternating Curren...
Hsp bio edit
Hsp bio edit
Similaire à Lecture 2: SOC Brain as Something
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
Daniel Wheeler
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
PFHub PFHub
The lensing power spectra for gravitational potential, astrometric shift, and convergence perturbations are powerful probes to investigate dark matter structures on small scales. We report the first lower and upper bounds of these lensing power spectra on angular scale ∼ 1 ′′ towards the anomalous quadruply lensed quasar MG J0414+0534 at a redshift z = 2.639. To obtain the spectra, we conducted observations of MG J0414+0534 using the Atacama Large Millimeter/submillimeter Array (ALMA) with high angular resolution (0. ′′02-0. ′′05). We developed a new partially non-parametric method in which Fourier coefficients of potential perturbation are adjusted to minimize the difference between linear combinations of weighted mean de-lensed images. Using positions of radio jet components, extended dust emission on scales > 1 kpc, and midinfrared flux ratios, the range of measured convergence, astrometric shift, and potential powers at an angular scale of ∼ 1. ′′1 (corresponding to an angular wave number of l = 1.2 × 106 or ∼ 9 kpc in the primary lens plane) within 1 σ are ∆κ = 0.021 − 0.028, ∆α = 7 − 9 mas, and ∆ψ = 1.2 − 1.6 mas2 , respectively. Our result is consistent with the predicted abundance of halos in the line of sight and subhalos in cold dark matter models. Our partially non-parametric lens models suggest a presence of a clump in the vicinity of object Y, a possible dusty dwarf galaxy and some small clumps in the vicinity of other lensed quadruple images. Although much fainter than the previous report, we detected weak continuum emission possibly from object Y with a peak flux of ∼ 100 µJy beam−1 at the ∼ 4 σ level.
ALMA Measurement of 10 kpc-scale Lensing Power Spectra towards the Lensed Qua...
ALMA Measurement of 10 kpc-scale Lensing Power Spectra towards the Lensed Qua...
Sérgio Sacani
A talk given at the 2011 meeting of the Division of Atomic, Molecular, and Optical Physics (DAMOP) of the American Physical Society, summarizing recent and exciting results in AMO physics being presented at the meeting.
What's So Interesting About AMO Phyiscs?
What's So Interesting About AMO Phyiscs?
Chad Orzel
Compositional Simulations that is Truly Compositional - Russell Johns
Compositional Simulations that is Truly Compositional - Russell Johns
Compositional Simulations that is Truly Compositional - Russell Johns
Society of Petroleum Engineers
Strong evolution xray_absorption_sn_2010jl
Strong evolution xray_absorption_sn_2010jl
Sérgio Sacani
My APS March Meeting presentation on my PhD thesis
APS March 2020: Wang-Landau Crystallization of the Free Energy Surface of Cry...
APS March 2020: Wang-Landau Crystallization of the Free Energy Surface of Cry...
Pierre Kawak
Superdiffusion of waves in random media
Superdiffusion of waves in random media
vynck
Similaire à Lecture 2: SOC Brain as Something
(8)
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
Nucleation III: Phase-field crystal modeling of nucleation process
ALMA Measurement of 10 kpc-scale Lensing Power Spectra towards the Lensed Qua...
ALMA Measurement of 10 kpc-scale Lensing Power Spectra towards the Lensed Qua...
What's So Interesting About AMO Phyiscs?
What's So Interesting About AMO Phyiscs?
Compositional Simulations that is Truly Compositional - Russell Johns
Compositional Simulations that is Truly Compositional - Russell Johns
Strong evolution xray_absorption_sn_2010jl
Strong evolution xray_absorption_sn_2010jl
APS March 2020: Wang-Landau Crystallization of the Free Energy Surface of Cry...
APS March 2020: Wang-Landau Crystallization of the Free Energy Surface of Cry...
Superdiffusion of waves in random media
Superdiffusion of waves in random media
Dernier
My CV as of the end of April 2024
Holdier Curriculum Vitae (April 2024).pdf
Holdier Curriculum Vitae (April 2024).pdf
agholdier
Class 11th formulas physics
Class 11th Physics NEET formula sheet pdf
Class 11th Physics NEET formula sheet pdf
AyushMahapatra5
Students will get the knowledge of the following- meaning of the pricing, its importance, objectives, methods of pricing, factors affecting the price of products, An overview of DPCO (Drug Price Control Order) and NPPA (National Pharmaceutical Pricing Authority)
Unit-V; Pricing (Pharma Marketing Management).pptx
Unit-V; Pricing (Pharma Marketing Management).pptx
VishalSingh1417
In BC’s nearly-decade-old “new” curriculum, the curricular competencies describe the processes that students are expected to develop in areas of learning such as mathematics. They reflect the “Do” in the “Know-Do-Understand” model. Under the “Communicating” header falls the curricular competency “Explain and justify mathematical ideas and decisions.” Note that it contains two processes: “Explain mathematical ideas” and “Justify mathematical decisions.” I have broken it down into its separate parts in order to understand--or reveal--its meaning. The first part is commonplace in classrooms. By now, BC math teachers—and students—understand that “Explain mathematical ideas” means more than “Show your work.” Teachers consistently ask “What did you do?” and “How do you know?” This process is about retelling, not just of steps but of thinking. The second part happens less frequently. Think back to the last time that you observed a student make—a necessary precursor to justify—a mathematical decision. “Justify” is about defending. Like “explain,” it involves reasoning; unlike “explain,” it also involves opinion and debate. In order to reinterpret the curricular competency “Explain and justify mathematical ideas and decisions,” I will continue to take apart its constituent part “Justify mathematical decisions” and carefully examine the term “mathematical decisions.” What, exactly, is a “mathematical decision”? Below, I will categorize answers to this question. These categories, and the provided examples, may help to suggest new opportunities for students to justify.
Making and Justifying Mathematical Decisions.pdf
Making and Justifying Mathematical Decisions.pdf
Chris Hunter
Kallidus experts, Lucinda Hensley and Justine Swain, share their insights about the do's and don'ts of accessible design.
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impact
dawncurless
In Bachelor of Pharmacy course, Class- 1st year, sem-II Subject EVS having topic of ECOLOGICAL SUCCESSION under the ECOSYSTEM point in this presentation points like ecological succession , types of ecological succession like primary and secondary explain with diagram. Students having deep knowledge about Ecological Succession after studying this presentation.
Ecological Succession. ( ECOSYSTEM, B. Pharmacy, 1st Year, Sem-II, Environmen...
Ecological Succession. ( ECOSYSTEM, B. Pharmacy, 1st Year, Sem-II, Environmen...
Shubhangi Sonawane
SGK
1029-Danh muc Sach Giao Khoa khoi 6.pdf
1029-Danh muc Sach Giao Khoa khoi 6.pdf
QucHHunhnh
Students will get the knowledge of the following: - meaning of Pharmaceutical sales representative (PSR) - purpose of detailing, training & supervision - norms of customer calls - motivating, evaluating, compensation and future aspects of PSR
Unit-IV; Professional Sales Representative (PSR).pptx
Unit-IV; Professional Sales Representative (PSR).pptx
VishalSingh1417
Código Creativo y Arte de Software | Unidad 1
Código Creativo y Arte de Software | Unidad 1
Código Creativo y Arte de Software | Unidad 1
Maestría en Comunicación Digital Interactiva - UNR
Basic Civil Engineering notes first year Notes Building notes Selection of site for Building Layout of a Building What is Burjis, Mutam Building Bye laws Basic Concept of sunlight ventilation in building National Building Code of India Set back or building line Types of Buildings Floor Space Index (F.S.I) Institutional Vs Educational Building Components & function Sills, Lintels, Cantilever Doors, Windows and Ventilators Types of Foundation AND THEIR USES Plinth Area Shallow and Deep Foundation Super Built-up & carpet area Floor Area Ratio (F.A.R) RCC Reinforced Cement Concrete RCC VS PCC
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
Denish Jangid
Students will get the knowledge of : - meaning of marketing channel - channel design, channel members - selection of appropriate channel, channel conflicts - physical distribution management and its importance
Unit-IV- Pharma. Marketing Channels.pptx
Unit-IV- Pharma. Marketing Channels.pptx
VishalSingh1417
Kctjbv
An Overview of Mutual Funds Bcom Project.pdf
An Overview of Mutual Funds Bcom Project.pdf
SanaAli374401
SGK
1029 - Danh muc Sach Giao Khoa 10 . pdf
1029 - Danh muc Sach Giao Khoa 10 . pdf
QucHHunhnh
exam for kinder
fourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writing
TeacherCyreneCayanan
This presentation was provided by William Mattingly of the Smithsonian Institution, during the third segment of the NISO training series "AI & Prompt Design." Session Three: Beginning Conversations, was held on April 18, 2024.
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
National Information Standards Organization (NISO)
General introduction about Microwave assisted reactions.
microwave assisted reaction. General introduction
microwave assisted reaction. General introduction
Maksud Ahmed
In this webinar, nonprofits learned how to delve into the minds of funders, unveiling what they truly seek in qualified grant applicants, and tools for success. Learn more about the Grant Readiness Review service by Remy Consulting at TechSoup to help you gather, organize, and assess the strength of documents required for grant applications.
Grant Readiness 101 TechSoup and Remy Consulting
Grant Readiness 101 TechSoup and Remy Consulting
TechSoup
test
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdf
ciinovamais
Mixin classes are helpful for developers to extend the models. Using these classes helps to modify fields, methods and other functionalities of models without directly changing the base models. This slide will show how to extend models using mixin classes in odoo 17.
Mixin Classes in Odoo 17 How to Extend Models Using Mixin Classes
Mixin Classes in Odoo 17 How to Extend Models Using Mixin Classes
Celine George
.
Gardella_PRCampaignConclusion Pitch Letter
Gardella_PRCampaignConclusion Pitch Letter
MateoGardella
Dernier
(20)
Holdier Curriculum Vitae (April 2024).pdf
Holdier Curriculum Vitae (April 2024).pdf
Class 11th Physics NEET formula sheet pdf
Class 11th Physics NEET formula sheet pdf
Unit-V; Pricing (Pharma Marketing Management).pptx
Unit-V; Pricing (Pharma Marketing Management).pptx
Making and Justifying Mathematical Decisions.pdf
Making and Justifying Mathematical Decisions.pdf
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impact
Ecological Succession. ( ECOSYSTEM, B. Pharmacy, 1st Year, Sem-II, Environmen...
Ecological Succession. ( ECOSYSTEM, B. Pharmacy, 1st Year, Sem-II, Environmen...
1029-Danh muc Sach Giao Khoa khoi 6.pdf
1029-Danh muc Sach Giao Khoa khoi 6.pdf
Unit-IV; Professional Sales Representative (PSR).pptx
Unit-IV; Professional Sales Representative (PSR).pptx
Código Creativo y Arte de Software | Unidad 1
Código Creativo y Arte de Software | Unidad 1
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
Unit-IV- Pharma. Marketing Channels.pptx
Unit-IV- Pharma. Marketing Channels.pptx
An Overview of Mutual Funds Bcom Project.pdf
An Overview of Mutual Funds Bcom Project.pdf
1029 - Danh muc Sach Giao Khoa 10 . pdf
1029 - Danh muc Sach Giao Khoa 10 . pdf
fourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writing
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
microwave assisted reaction. General introduction
microwave assisted reaction. General introduction
Grant Readiness 101 TechSoup and Remy Consulting
Grant Readiness 101 TechSoup and Remy Consulting
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdf
Mixin Classes in Odoo 17 How to Extend Models Using Mixin Classes
Mixin Classes in Odoo 17 How to Extend Models Using Mixin Classes
Gardella_PRCampaignConclusion Pitch Letter
Gardella_PRCampaignConclusion Pitch Letter
Lecture 2: SOC Brain as Something
1.
Canonical Distribution 2010
2.
E=−
σi σj i,j Ising Model 2010
3.
∆E < 0P
(∆E) = 1 ∆E > 0then p(∆E) = 1 − e−β∆E 2010
4.
2010
5.
2010
6.
From a single
attracting state to multiple attracting states. 2010
7.
2010
8.
Spin glass: random
spin-spin interaction generates a spatially random but temporally ordered states. 2010
9.
2010
10.
T
Tc M 2010
11.
Scale Free Correlations
in Starling Flocks, A Cavagna et al. PNAS (2010) 2010
12.
2010
13.
Self-Organized Criticality(SOC)
Sandpile Model P.Bak Avalanche size P.Bak, C. Tang, K. WiesenFeld. Self-Organized Criticality: An Explanation of 1/f Noise. Physical Review Letters. Volume 59, Number 4, July 1987. 2010
14.
by Hide Sakaguchi
et al. 2005 2010
15.
NKmodel: a complete
phase space of K=3 N=6 2010
16.
2010
17.
2010
18.
Developmental abnormality, called
metaplasia, exhibits the same restricted pathways of aberrant differentiation. 2010
19.
lambda-parameter (C.Langton) 2010
20.
Per Bak’s memory
as a SOC and so on. 2010
21.
How the fluctuation
propagates through a system? 2010
22.
What about avalanche
in the high dimensional space? 2010
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