Origin of the bright prompt optical emission in the naked eye burst

Дата и время публикации : 2011-01-20T16:37:09Z

Авторы публикации и институты :
R. Hascoët (UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, CNRS, UMR 7095, Institut d’Astrophysique de Paris)
F. Daigne (UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, CNRS, UMR 7095, Institut d’Astrophysique de Paris)
R. Mochkovitch (UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, CNRS, UMR 7095, Institut d’Astrophysique de Paris)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 3 pages, 1 figure, proceedings of the conference “Deciphering the Ancient Universe with Gamma-Ray Bursts”, Kyoto, Japan. Editors: N. Kawai, S. Nagataki
Первичная категория: astro-ph.HE

Все категории : astro-ph.HE

Краткий обзор статьи: The huge optical brightness of GRB 080319B (the "Naked Eye Burst) makes this event really challenging for models of the prompt GRB emission. In the framework of the internal shock model, we investigate a scenario where the dominant radiative process is synchrotron emission and the high optical flux is due to the dynamical properties of the relativistic outflow: if the initial Lorentz factor distribution in the jet is highly variable, many internal shocks will form within the outflow at various radii. The most violent shocks will produce the main gamma-ray component while the less violent ones will contribute at lower energy, including the optical range.

Category: Physics