Discovery of the short gamma-ray burst GRB 050709.-猫眼课题宝

DOI：

发表时间：

2005-12

期刊：

Nature

影响因子：

64.8

通讯作者：

中科院分区：

综合性期刊1区

文献类型：

作者：

J. Villasenor;D. Lamb;G. Ricker;J. Atteia;N. Kawai;N. Butler;Y. Nakagawa;J. Jernigan;M. Boer;G. Crew;T. Donaghy;J. Doty;E. Fenimore;M. Galassi;C. Graziani;K. Hurley;A. Levine;F. Martel;M. Matsuoka;J. Olive;G. Prigozhin;T. Sakamoto;Y. Shirasaki;Motoko Suzuki;T. Tamagawa;R. Vanderspek;S. Woosley;A. Yoshida;J. Braga;R. Manchanda;G. Pizzichini;K. Takagishi;M. Yamauchi;Hete Team

伽玛射线暴（GRBs）分为两类：短硬暴和长软暴。后者现在已知有x射线和光学余辉，发生在恒星形成星系的宇宙距离上，并且与大质量恒星的爆炸有关。相比之下，距离尺度、能量尺度和短爆发的起源仍然是一个谜。在这里，我们报告了一个短硬爆发的发现，其精确的定位导致了后续观测，确定了x射线余辉和（第一次）短硬爆发的光学余辉；这反过来又导致了在z = 0.16处将爆发的宿主星系确定为晚型星系（参考文献10）。这些结果表明，至少有一些短而硬的爆发发生在星系外围的宇宙距离上，并且很可能是由紧致双星的合并引起的。

Gamma-ray bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the explosion of massive stars. In contrast, the distance scale, the energy scale and the progenitors of the short bursts have remained a mystery. Here we report the discovery of a short-hard burst whose accurate localization has led to follow-up observations that have identified the X-ray afterglow and (for the first time) the optical afterglow of a short-hard burst; this in turn led to the identification of the host galaxy of the burst as a late-type galaxy at z = 0.16 (ref. 10). These results show that at least some short-hard bursts occur at cosmological distances in the outskirts of galaxies, and are likely to be caused by the merging of compact binaries.

Discovery of the short gamma-ray burst GRB 050709.

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