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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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Zaradenie knihy Książki po angielsku Technology, engineering, agriculture Other technologies & applied sciences Space science

• Celý názov: Searching for the Long-Duration Gamma-Ray Burst Progenitor
• Autor: Robert Allan Mesler III
• Jazyk: Angličtina
• Väzba: Brožovaná
• Počet strán: 111
• EAN: 9783319381350
• ISBN: 3319381350
• ID: 13633652
• Nakladateľ: Springer International Publishing AG
• Hmotnosť: 2058 g
• Rozmery: 235 × 155 × 7 mm
• Dátum vydania: 23. August 2016

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