Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-02
Astrophys.J.694:1019-1033,2009
Astronomy and Astrophysics
Astrophysics
30 pages, 13 figures. Updated to match the version published in ApJ
Scientific paper
10.1088/0004-637X/694/2/1019
The thermal evolution of neutron stars is coupled to their spin down and the resulting changes in structure and chemical composition. This coupling correlates stellar surface temperatures with rotational state as well as time. We report an extensive investigation of the coupling between spin down and cooling for hybrid stars which undergo a phase transition to deconfined quark matter at the high densities present in stars at low rotation frequencies. The thermal balance of neutron stars is re-analyzed to incorporate phase transitions and the related latent heat self-consistently, and numerical calculations are undertaken to simultaneously evolve the stellar structure and temperature distribution. We find that the changes in stellar structure and chemical composition with the introduction of a pure quark matter phase in the core delay the cooling and produce a period of increasing surface temperature for strongly superfluid stars of strong and intermediate magnetic field strength. The latent heat of deconfinement is found to reinforce this signature if quark matter is superfluid and it can dominate the thermal balance during the formation of a pure quark matter core. At other times it is less important and does not significantly change the thermal evolution.
Madsen Jes
Stejner Morten
Weber Fridolin
No associations
LandOfFree
Signature of deconfinement with spin down compression in cooling hybrid stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Signature of deconfinement with spin down compression in cooling hybrid stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signature of deconfinement with spin down compression in cooling hybrid stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-496106