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arXiv 1104.3028astro-ph.HE
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GRB 101024 A令人困惑的时变光学和X射线余辉

The puzzling temporally variable optical and X-ray afterglow of GRB 101024A

B. Gendre, G. Stratta, M. Laas-Bourezınst, D. M. Coward, A. Klotz, S. Cutini, M. Boer, C. Stockdale

摘要:

目的:介绍GRB 101024 A余辉的光学观测结果,并尝试用现有的余辉模型将这些观测结果与GRB 101024 A的X射线余辉数据相协调。方法:我们利用早期的Zadko望远镜光学观测数据和X射线数据,并与反向激波/前向激波模型进行比较。结果:早期的光学光变曲线揭示了一个非常不寻常的陡峭衰减指数α ~5。这之后是一个平坦化,可能是一个平台期,与X射线中的类似特征一致。我们在标准的反向激波/正向激波模型和能量注入的框架下讨论了这些观测结果,指出平台相也可能是新磁星形成的标志。

英文摘要:

Aim: To present the optical observations of the afterglow of GRB 101024A and to try to reconcile these observations with the X-ray afterglow data of GRB 101024A using current afterglow models Method: We employ early optical observations using the Zadko Telescope combined with X-ray data and compare with the reverse shock/forward shock model. Results: The early optical light curve reveals a very unusual steep decay index of alpha~5. This is followed by a flattening and possibly a plateau phase coincident with a similar feature in the X-ray. We discuss these observations in the framework of the standard reverse shock/forward shock model and energy injection.We note that the plateau phase might also be the signature of the formation of a new magnetar.

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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