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  • 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 )