1. Neutron-Stars
By Kraml E.

2. A Neutron-Star
(not actually)
The Sun
Source: NASA

3. A Neutron-Star

4. Comparison Diameter: Mass: Density: 1.4 x 10^6 km Diameter: Mass:
2 x 10^30 kg
4 x 10^30 kg (2x Ms)
1410 kg/m³
6 x 10^17 kg/m³
(4 x 10^14x Density of Sun)

5. Formation Main sequence star > 8 Ms
Nuclear processes lead to iron core
Shell-burning mass deposits causes core to exeed
Chandrasekhar-limit
Increased temperature > 5 x 10^9 K leads
to photodisintegration
Electrons and Protons combine to Neutrons
-> Releasing Neutrinos
Neutron degeneracy pressure stops contraction,
Neutrinos are flung outward creating a supernova
By Richard Powell

6. Formation alternatives
Starting mass < 0.5 Ms -> Cannot start Helium-burning
Starting mass < 8 Ms -> White Dwarf
Starting mass between 8 – 12 Ms -> Neutron star with 1.25 Ms
Remnant mass > 3-5 Ms -> Black hole
Maximum observed mass of neutron stars is 2.01 Ms

7. Gravity
by Corwin Zahn

8. Magnetic field On Earth: Medical MRI: 1.5 – 3 T HighRes MRI: 7 – 9.4 T
Levitating Frog: 16 T
Laboratory, continous: 45 T
Laboratory, pulse(non-destructive): 100T
Laboratroy , pulse: 10^3 T
Neutron Star: 10^4 – 10^11 T
Magnetar: 10^8 – 10^11 T

9. Radiation Non-pulsating neutron star Pulsars (pulsating radio star)
Radio-quiet neutron star
Source: Wikipedia