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Broadband Observations Of The Naked-eye γ-ray Burst Grb 080319b

机译:裸眼γ射线暴Grb 080319b的宽带观测

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摘要

Long-duration γ-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse of massive stars. Previous early optical observations of even the most exceptional GRBs (990123 and 030329) lacked both the temporal resolution to probe the optical flash in detail and the accuracy needed to trace the transition from the prompt emission within the outflow to external shocks caused by interaction with the progenitor environment. Here we report observations of the extraordinarily bright prompt optical and γ-ray emission of GRB 080319B that provide diagnostics within seconds of its formation, followed by broadband observations of the afterglow decay that continued for weeks. We show that the prompt emission stems from a single physical region, implying an extremely relativistic outflow that propagates within the narrow inner core of a two-component jet.
机译:长时间的γ射线爆发(GRB)会在整个电磁频谱中释放大量能量,因此可为大型恒星坍塌形成黑洞的过程提供一个窗口。即便是最出色的GRB(990123和030329),以前的早期光学观测也缺乏详细探测光学闪光的时间分辨率,也缺乏追踪从流出内部的即时发射到与之相互作用引起的外部震动的过渡所需的精度。祖环境。在这里,我们报告了对GRB 080319B异常明亮的光学发射和γ射线发射的观察结果,这些结果在其形成后的数秒内提供了诊断信息,随后对余辉衰减持续了数周进行了宽带观察。我们表明,即时排放源于单个物理区域,这意味着在两组分射流的狭窄内核内传播的极度相对论的流出。

著录项

  • 来源
    《Nature》 |2008年第7210期|p.183-188|共6页
  • 作者单位

    Department of Astronomy and Astrophysics, 525 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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