Results 1 to 4 of 4

Thread: Eccentric Neutron Stars

  1. #1
    Join Date
    Sep 2005
    Location
    Metrowest, Boston
    Posts
    4,220

    Eccentric Neutron Stars

    Neutron stars may sometimes be found in binary pairs, and The Nobel went to Taylor and Hulse for predicting the gravitational radiation from such a pair, with it's consequent period shortening. These authors find the eccentricity of the orbits of a pair suggests whether they are Fe core collapse, or pair annihilation births. Interesting. SEE:http://www.google.com/imgres?imgurl=...26tbs%3Disch:1

    and:http://arxiv.org/PS_cache/arxiv/pdf/...006.4584v1.pdf
    Last edited by trinitree88; 2010-Jun-24 at 08:06 PM. Reason: links

  2. #2
    Join Date
    May 2005
    Posts
    1,810
    Is there a source article to read?

  3. #3
    Join Date
    Sep 2005
    Location
    Metrowest, Boston
    Posts
    4,220
    Quote Originally Posted by baric View Post
    Is there a source article to read?
    baric. Yep, the second link. pete

  4. 2010-Jun-25, 02:30 PM

  5. #4
    Join Date
    May 2005
    Posts
    1,810
    wow, that was a really nice paper. Thanks for sharing it!

    It's clear that they need more data as 14 data points is not really enough to do the kind of statistical analysis they were employing. This is why they couldn't reject with a high degree of confidence (only 70%) that the neutron star masses belong to a single Gaussian distribution rather than a bimodal one that we intrinsically know must exist due to two completely different SN formation events.

    Running the Monte Carlo simulations to demonstrate that a Fe collapse SN will result in a more eccentric orbit between neutron pairs was pretty neat. Could the prediction that this can occasionally unbind neutron pairs could be validated by observing unpaired neutron stars and verifying their mass fits the expected bimodal distribution?

    Overall it was a great read but also underscores the need for MORE DATA

Similar Threads

  1. Replies: 0
    Last Post: 2008-Jun-30, 09:50 PM
  2. What are neutron stars, anyway?
    By Faultline in forum Space/Astronomy Questions and Answers
    Replies: 16
    Last Post: 2005-Oct-05, 09:57 PM
  3. Are neutron stars and quark stars immortal?
    By Leiningen in forum Astronomy
    Replies: 4
    Last Post: 2005-Jun-05, 07:59 PM
  4. Neutron Stars
    By north in forum Space/Astronomy Questions and Answers
    Replies: 23
    Last Post: 2005-May-04, 11:06 AM
  5. White Dwarf Stars And Low-mass Neutron Stars
    By Duane in forum Against the Mainstream
    Replies: 3
    Last Post: 2004-Jun-24, 12:16 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
here
The forum is sponsored in-part by: