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arXiv:astro-ph/0402073 (astro-ph)
[Submitted on 3 Feb 2004]

Title:Energy release due to antineutrino untrapping from hot quark stars

Authors:D. N. Aguilera, D. Blaschke, H. Grigorian
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Abstract: An equation of state for 2-flavor quark matter (QM) with diquark condensation under the conditions for compact stars -$\beta$-equilibrium, charge and color neutrality- is presented. Trapped antineutrinos prevent the formation of the diquark condensate at moderate densities above a critical value of the antineutrino chemical potential $\mu_{\bar \nu_e}^c$. The following consequences are presented: 1) The star develops a 2-phase structure ($\mu_{\bar \nu_e}\geq \mu_{\bar \nu_e}^c$): a color superconducting QM core and a normal QM shell. 2)During the cooling, when the temperature is small enough ($T<1$ MeV) the antineutrino mean free path becomes larger than the thickness of the normal QM shell and the antineutrinos get untrapped in a sudden burst. The energy release is estimated as $\simeq 10^{52}$ erg and an antineutrino pulse is expected to be observed.
Comments: 10 pages, 6 figures (8 ps files and 3 epsi files), this http URL and this http URL files. Submitted for the Conference Proceedings of the KIAS-APCTP International Symposium in Astro-Hadron Physics Compact Stars: Quest for New States of Dense Matter, Nov. 10-14, 2003 in Seoul, Korea
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0402073
  (or arXiv:astro-ph/0402073v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0402073
Related DOI: https://doi.org/10.1142/9789812702524_0031

Submission history

From: Deborah Nancy Aguilera [view email]
[v1] Tue, 3 Feb 2004 17:38:08 UTC (157 KB)
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