MAGIC detection of GRB 201216C at z = 1.1
MAGIC detection of GRB 201216C at z = 1.1
复制标题
在 z = 1.1 处对 GRB 201216C 进行 MAGIC 检测
DOI：
10.1093/mnras/stad2958
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发表时间：
2024
影响因子：
4.8
通讯作者：
Abe H
中科院分区：
文献类型：
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作者：
Abe H
伽玛射线暴（GRBs）是发生在宇宙距离上的爆炸性瞬态事件，在几个能带上以电磁辐射的形式释放大量能量。我们报告MAGIC望远镜探测到长GRB 201216C。该源位于atz= 1.1，因此它是在非常高能量下探测到的最远的源。在同步加速器和同步加速器自康普顿（SSC）场景下，结合多波长数据对GRB 201216C 70 GeV以上的辐射进行了建模。我们发现SSC可以很好地解释从光学到高能波段的宽带数据。对于后期无线电数据，需要一个不同的分量来解释观测到的发射。与之前在高能范围内探测到的GRB不同，GRB 201216C的模型强烈倾向于风状介质。模型参数的值与过去在探测到GeV能量的grb余辉的研究中发现的值相似。
Gamma-ray bursts (GRBs) are explosive transient events occurring at cosmological distances, releasing a large amount of energy as electromagnetic radiation over several energy bands. We report the detection of the long GRB 201216C by the MAGIC telescopes. The source is located atz= 1.1 and thus it is the farthest one detected at very high energies. The emission above 70 GeV of GRB 201216C is modelled together with multiwavelength data within a synchrotron and synchrotron self-Compton (SSC) scenario. We find that SSC can explain the broad-band data well from the optical to the very-high-energy band. For the late-time radio data, a different component is needed to account for the observed emission. Differently from previous GRBs detected in the very-high-energy range, the model for GRB 201216C strongly favours a wind-like medium. The model parameters have values similar to those found in past studies of the afterglows of GRBs detected up to GeV energies.