Hybrid protoneutron stars within a static approach

Details Hybrid protoneutron stars within a static approach Hybrid protoneutron stars within a static approach

2007-02-20

arxiv.org/abs/astro-ph/0702533v1

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, Prepared for XI Convegno su Problemi di Fisica Nucleare Teorica (Cortona 2006), Cortona, Italy, 11-14 Oct

Scientific paper

We study the hadron-quark phase transition in the interior of protoneutron stars. For the hadronic sector, we use a microscopic equation of state involving nucleons and hyperons derived within the finite-temperature Brueckner-Bethe-Goldstone many-body theory, with realistic two-body and three-body forces. For the description of quark matter, we employ the MIT bag model both with a constant and a density-dependent bag parameter. We calculate the structure of protostars within a static approach. In particular we focus on a suitable temperature profile, suggested by dynamical calculations, which plays a fundamental role in determining the value of the minimum gravitational mass. The maximum mass instead depends only upon the equation of state employed.

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