A little presentation about Neutron Star and their principal properties.

1. Neutron Star
and
Pulsar Stage
Mattia Sibilia V°D
a.s. 2013/14

2. Introduction
Star
Red
Supergiant
Supernova
White
Dwarf
Black Hole
Black
Dwarf
Neutron Star /
Pulsar
Planetary Nebula
SNR (SuperNovae Remnant)

3. The Birth
Red Supergiant
Supernova
explosion
Outward
(external
strata)
Inward
( central
core )
Compression in
a sphere ( 10
miles )
Neutron
Star

4. The structure
Compression
Central core
Dense, super-hot
mass
Change of
structure
electrons and
protons
neutrons

5. The properties - Density
Neutron Star
Teaspoon of neutron
star's matter
dense object
100 million tons
No empty
space in his
structure
On Earth it
would
disappear

6. The properties - Surface
Enormous
Gravity force
Attraction of debris
Pressed on surface
Part of solid
crust
No “hills” or
bumps
Perfect glass
ball

7. The properties - spin
During supernova
explosion
Normally 30
times/sec
The fastest one
600 times/sec
Mass spin very
fast
Principle of
Conservation of
Angular
Momentum

8. The properties - Temperature
Temperature
500 million
degrees
X-rays
White

9. The Magnetic Fields
Supernova
explosion
Magnetic forces
debris around the
star
Impact the
surface of
neutron star (due
to the gravity
force)
jets

10. Pulsar
Matter impacted
turn back away from star
Into two narrow beams of
matter
jets
Point at Earth
Pulsing Neutron Star or
Pulsar

11. The Death
Slowly the rest of
supernova gases
(fuel of neutron
star)
Will run out:
No Jets
colour: from white to
red
The spin
decelerate
Black frigid
sphere with a
powerful gravity
Black
Dwarf

12. bibliography
●
Celestia's educational activity nr. 6 (Star)
●
Geografia Generale (Crippa-Fiorani)
●
http://en.wikipedia.org/wiki/Neutron_star
●
http://www.nasa.gov/ ( for images )