GRB160203A：一种对光空间的探索
GRB160203A: an exploration of lumpy space
摘要：
GRB 160203 A是一个高红移的长伽马射线暴，在余辉光变曲线上呈现出一系列不寻常的特征。我们研究了它的光学和X射线数据。我们发现这个事件发生在一个恒定的密度介质中的第一部分的余辉。然而，在13千秒后，我们发现一些耀斑活动的光学和X射线光变曲线。我们用周围介质密度的涨落来解释这些耀斑。其他情况，如磁星的能量注入或微物理参数的变化不支持的数据。我们尝试性地将这些波动与一个不寻常的宿主星系联系起来，该星系的气体密度与银河系相似，并且在一个类似于沃尔夫-拉叶星的恒星祖先周围有一个致密的物质茧。一个终端休克的情况下被发现是不太可能的。
英文摘要：
GRB160203A is a high redshift long gamma-ray burst presenting a collection of unusual features in the afterglow light curve. We study its optical and X-ray data. We find this event to occur within a constant density medium during the first part of the afterglow. However, after 13 ks we spot some flaring activities in the optical and X-ray light curves. We explain these flares by fluctuation of densities of the surrounding medium. Other scenarios, such as energy injection from a magnetar or variation of microphysical parameters are not supported by the data. We tentatively link these fluctuations to an unusual host galaxy, with gas density similar to the Milky Way and a dense cocoon of matter around a stellar progenitor similar to a Wolf-Rayet star. A termination shock scenario is found to be less likely.
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