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arXiv 1104.3087astro-ph.HEastro-ph.CO
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发现伴随超新星的伽马射线暴

Discovery of a gamma-ray burst with an associated supernova

Rhaana L. C. Starling, Klaas Wiersema, Andrew Levan

摘要:

我们报告了附近长而软的GRB 100316 D的发现,以及随后发现的宿主星系和相关超新星。我们研究了极不寻常的即时发射与时间分辨γ射线X射线光谱,发现除了同步辐射光谱的热成分是必需的。宿主星系是一个明亮的蓝色星系,具有高度扰动的形态。从光度学和光谱学,我们提供了一个精确的天体测量和红移,并得出恒星形成率和恒星年龄的关键主机属性。我们比较了我们的研究结果,这个GRB-SN与著名的GRB 060218以前的情况。GRB 100316 D是目前光谱证实的GRB-SN e稀疏样本的重要补充,从中可以更好地了解长GRB祖细胞和GRB-SN连接。

英文摘要:

We report the discovery of the nearby long, soft GRB 100316D, and the subsequent unveiling of its host galaxy and associated supernova. We study the extremely unusual prompt emission with time-resolved gamma-ray to X-ray spectroscopy and find that a thermal component in addition to the synchrotron spectrum is required. The host galaxy is a bright, blue galaxy with a highly disturbed morphology. From optical photometry and spectroscopy we provide an accurate astrometry and redshift, and derive the key host properties of star formation rate and stellar age. We compare our findings for this GRB-SN with the well known previous case of GRB 060218. GRB 100316D is an important addition to the current sparse sample of spectroscopically confirmed GRB-SNe, from which a better understanding of long GRB progenitors and the GRB-SN connection can be gleaned.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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