Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Neutron stars seem an oddity to me

  1. May 27, 2004 #1

    wolram

    User Avatar
    Gold Member

    neutron stars seem an oddity to me, they seem to have
    to much mass to size to be held together purly by gravity
    do neutrons have mutual attraction? or is space very very
    distorted by them?
     
  2. jcsd
  3. May 27, 2004 #2

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    They ARE held togethr by garvity, you can never have enough mass to volume to be held together by gravity.
     
  4. May 27, 2004 #3

    wolram

    User Avatar
    Gold Member

    They ARE held togethr by garvity, you can never have enough mass to volume to be held together by gravity.
    ----------------------------------------------------------------------------------
    so how does a neutron star become a neutron star, it seems that
    size for size the neutron star should distort space time in the most
    extreem way, probabaly more tightly than a black hole.
     
  5. May 27, 2004 #4

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    A neutron star becomes a neutron star via stellar collapse when the stellar remnants have enough gravity to overcome the degenarcy pressure between electrons and protons after the star goes supernova. What stops it becoming a black hole is that it doesn't have enough gravity to overcome the degenracy pressure between neutrons.
     
  6. May 27, 2004 #5

    Labguy

    User Avatar
    Science Advisor

  7. May 28, 2004 #6

    wolram

    User Avatar
    Gold Member

    I had a look on google as i wasn't sure about the explanations
    given, and found this,

    http://xxx.arxiv.cornell.edu/abs/astro-ph/0311471

    Neutron stars without gravity
    Authors: V.K.Ignatovich

    It is demonstrated that not only gravity, but also neutron-striction forces due to optical potential created by coherent elastic neutron-neutron scattering can hold a neutron star together. The latter forces can be stronger than gravitational ones. The effect of these forces on mass, radius and composition of the neutron star is estimated.

    this maybe speculative but it does show that gravity may not be the
    only contributer to the binding force of a neutron star.
     
    Last edited: May 28, 2004
  8. May 28, 2004 #7

    TeV

    User Avatar

    + there's is often rotation..
     
  9. May 28, 2004 #8

    Labguy

    User Avatar
    Science Advisor

    At this level, it would be degeneracy pressure of the strong nuclear force; binding force between the quarks that make up the neutrons.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Neutron stars seem an oddity to me
  1. Neutron stars (Replies: 3)

  2. Neutron Stars (Replies: 6)

  3. Neutron star (Replies: 12)

  4. Neutron star (Replies: 9)

  5. Neutron Star (Replies: 14)

Loading...