Internal Plateau in Short GRBs and Quark Stars

TL;DR

This paper explores quark stars as central engines for short gamma-ray bursts with internal plateaus, proposing new equations of state that align with observed data and favoring quark stars over neutron stars.

Contribution

It introduces new quark star equations of state and demonstrates their consistency with short GRB observations, supporting quark stars as the preferred central engine.

Findings

Quark star models better explain internal plateau features in short GRBs.

New equations of state (PMQS1, PMQS2, PMQS3) fit observed burst data.

Quark stars are more favored than neutron stars as central engines for these bursts.

Abstract

I summarize our recent calculations on quark stars (QSs), for the purpose of explaining some short gamma-ray bursts characterized by internal plateau in their early X-ray afterglow. According to the present plateau sample, the QS central engine model is demonstrated to more preferred than the original neutron star (NS) one. New QS equation of states (PMQS1, PMQS2, PMQS3) are then proposed, respecting fully the observed burst data and the mass distribution of the Galactic NS-NS systems.