1. - DEATH OF LARGE STARS THE BLACK HOLE
Persico Francesco V D

2. THE BIRTH OF A BLACK HOLE
Red Supergiant
Chandrasekhar limit
nucleus bigger than
Supernove or
1,44 solar masses
Hypernove explosions
Black Hole
Betelgeuse
Mu Cep
Antares
Subrahmanyan
Chandrasekhar
( 1910/1995)

3. really violent implosion
stellar core
“impossibly”
dense
over the Pauli
exclusion principle
“out of existence”
center of the Black Hole
smaller than the
nucleus of an atom
(10−10 m).
Stephen Hawking
Singularity
Roger Penrose
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Wolfgang Pauli
(1900/1958)

4. Black Hole
“Black”
infinitely strong
gravitational field
gravity
nothing, not even a beam of
light (speed of 300 000
km/s), can escape it
“event horizon”
limit of Black Hole
Albert Einstein (1879/1955)
the curvature in the space-time of Einstein
is infinite near the black hole

5. “THE BLACK HOLES ARE NOT SO BLACK”
“Accretion Disk”
flat disk of spinning material
around the Black Hole
high speeds
glow
jets of high-speed
gas
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intense magnetic fields
Black Hole
like a pulsar
Pulsar

6. some Black Holes
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swallow
Milky Way
This Black Hole
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spins 100 times per
second.
no accretion disk
hypothesis
central core of the
Milky Way.
enormous Black hole
neighboring star

7. summary
death of a massive star
Supernove explosion
Neutron Star
Hypernove explosion
Pulsar
Black Hole
appears to exist forever
Black dwarf

8. BIBLIOGRAPHY
 Celestia
Educational Activity 6: The Life and Death
of Stars;
 “Geografia Generale” Crippa-Fiorani;
 http://it.wikipedia.org/wiki/Buco_nero.