Dying Stars Part 1 Neutron Stars

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Dying StarsPart 1Neutron Stars
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• Supernovas make some pretty remanants also.
• The Crab Nebula was seen in 1054 CE
• It has a Neutron Star in the center in addition
  to blinking on and off it also gives a radio
  sound. (Pulsar)

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• Pulsars
• When a large mass star ends its life in an
  explosion a supernova the core of the star
  goes on to form one of two things a Black Hole
  (if the stars mass was high) or a Neutron Star
  if the mass was a bit lower.
• The Neutron Star (and the Black Hole) will be
  spinning. IF the orientation of the spin axis,
  and magnetic fields line up correctly we can
  hear them in the Radio they are Pulsars.

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• The first Pulsar was discovered by Jocelyn
  Bell.
• She was a Student whenshe found thePulsar, so
  herprofessor gotmost of the Credit. Most
  people now giveher the credit.

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• Sounds of Pulsars Rapidly Spinning Neutron Stars

PSR B0329 54 period.714519 sec. 1.40
rotations/sec
Vela 10,000 years old 89 millisecond 11
rotations/sec
Crab Supernova in 1054 AD - 30 rotations/sec
PSR J0437-4715 an old pulsar 174
rotations/sec
PSR B193721 Fastest Known Period.00155780644
887275 sec 642 rotations/sec the surface of
the star is going about 1/7 the speed of light