GRB: A Signature of Phase Transition to QGP?

Details GRB: A Signature of Phase Transition to QGP? GRB: A Signature of Phase Transition to QGP?

1999-08-24

arxiv.org/abs/astro-ph/9908262v1

Astronomy and Astrophysics

Astrophysics

7 pages, no figures, LaTeX, presented in 1999 Pacific Rim Conference of Stellar Astrophysics in Hong Kong University

Scientific paper

It is suggested that the inner energetic engine of Gamma ray burst (GRB) may be the result of the transition of normal hadron to quark-gluon plasma (QGP) in rapidly-rotating and spin-down newborn neutron star. When such a nascent neutron star slows down through dipole electromagnetic and quadruple gravitational radiation, the increasing center density may reach the QCD transition density, i.e., 5-10 nuclear density. Such kind of energy release from the phase transition would be responsible for GRB and its possible beaming effect. The relative dense gaseous environment of GRB location and the iron line observed in the X-ray afterglow support this idea. Some predictions in this model are given. keywords: Gamma-ray Bursts, Supernova, Quark-gluon plasma

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