Searching for the LongDuration GammaRay Burst Progenitor

Searching for the LongDuration GammaRay Burst Progenitor

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Cod produs/ISBN: 9783319066257

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Autor: Mesler III

Editura: Springer

Limba: Engleza

Nr. pagini: 111

Coperta: Hardback

Dimensiuni: 23.4 x 16 x 1.3 cm

An aparitie: 2014

Nominated as an outstanding thesis by the Department of Physics and Astronomy of the University of New Mexico, this thesis seeks to identify the gamma-ray burst (GRB) progenitor. GRBs are extragalactic explosions that briefly outshine entire galaxies, but the mechanism that can release that much energy over a < 100 second burst is still a mystery. The leading candidate for the GRB progenitor is currently a massive star which collapses to form a black hole�accretion disk system that powers the GRB. GRB afterglows, however, do not always show the expected behavior of a relativistic blast wave interacting with the stellar wind that such a progenitor should have produced before its collapse. In this book, the author uses the Zeus-MP astrophysical hydrodynamics code to model the environment around a stellar progenitor prior to the burst. He then develops a new semi-analytic MHD and emission model to produce light curves for GRBs encountering these realistic density profiles. The work ultimately shows that the circumburst medium surrounding a GRB at the time of the explosion is much more complex than a pure wind, and that observed afterglows are entirely consistent with a large subset of proposed stellar progenitors.
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An aparitie 2014
Autor Mesler III
Dimensiuni 23.4 x 16 x 1.3 cm
Editura Springer
Format Hardback
Limba Engleza
Nr pag 111

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