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arXiv:astro-ph/9807198 (astro-ph)
[Submitted on 20 Jul 1998]

Title:Implications of Hyperon Pairing for Cooling of Neutron Stars

Authors:Christoph Schaab (University of Munich), Shmuel Balberg (University of Jerusalem), Juergen Schaffner-Bielich (LBNL Berkeley)
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Abstract: The implications of hyperon pairing for the thermal evolution of neutron stars containing hyperons are investigated. The outcome of cooling simulations are compared for neutron star models composed only of nucleons and leptons, models including hyperons, and models including pairing of hyperons. We show that lambda and neutron pairing suppresses all possible fast neutrino emission processes in not too massive neutron stars. The inclusion of lambda pairing yields better agreement with X-ray observations of pulsars. Particularly, the surface temperatures deduced from X-ray observations within the hydrogen atmosphere model are more consistent with the thermal history of neutron stars containing hyperons, if the critical temperature for the onset of lambda and nucleon pairing is not too small.
Comments: 7 pages, 3 figures. To be published in ApJL. The postscript and additional tables can be found at this http URL
Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:astro-ph/9807198
  (or arXiv:astro-ph/9807198v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9807198
Journal reference: ApJ 504 (1998) L99
Related DOI: https://doi.org/10.1086/311577

Submission history

From: Christoph Schaab [view email]
[v1] Mon, 20 Jul 1998 10:33:24 UTC (36 KB)
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