Highly luminous supernovae associated with gamma-ray bursts
Highly luminous supernovae associated with gamma-ray bursts
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DOI：
10.1051/0004-6361/201629162
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发表时间：
2016-06
影响因子：
6.5
通讯作者：
D. A. Kann;P. Schady;F. Olivares;S. Klose;A. Rossi;D. Perley;T. Kruhler;J. Greiner;A. N. Guelbenzu
中科院分区：
文献类型：
--
作者：
D. A. Kann;P. Schady;F. Olivares;S. Klose;A. Rossi;D. Perley;T. Kruhler;J. Greiner;A. N. Guelbenzu
上下文GRB 111209A是迄今为止观测到的最长的伽马射线暴（GRB）之一，与SN 2011kl有关，SN 2011kl是迄今为止探测到的最明亮的GRB超新星（SN）。几条证据表明，这GRB-SN是由磁星中央引擎。目标。我们将SN 2011kl置于SNe大样本的背景下，更详细地解决这个GRB-SN是否可以被放射性供电的问题，以及它是否代表GRB-SN或欠发光超发光SN（SLSN）的极端版本。方法.我们使用SN 1998bw作为模板对SN 2011kl进行建模，并推导出包括近红外数据的热光度曲线。我们比较了SN 2011kl的性质，剥离包络和SLSNe的文献结果。结果在k，s背景下的比较，即SN 2011kl与SN 1998bw模板在光度和光曲线拉伸方面的比较，清楚地表明SN 2011kl是迄今为止最明亮的GRB-SN，并且在光谱上与其他事件非常不同，因为它显着更蓝/更热。虽然SN 2011kl没有达到SLSNe的经典光度阈值，并且比这些天体中的任何一个都演化得更快，但它在几个方面比经典的GRB关联的宽线Ic型SNe更像SLSNe。结论. GRB 111209 A是一个非常活跃的事件，在早期（瞬发）和非常晚（SN）的时间。我们在同伴出版物中表明，除了极端的持续时间，伽玛暴和余辉参数与已知的分布这些参数是一致的。另一方面，SN 2011kl在光度和光谱特性方面都非常出色，这表明GRB 111209A可能不是由标准模型的中央引擎提供动力的，这进一步支持了我们先前的结论。相反，它揭示了GRB和SLSNe之间直接联系的可能性。
Context. GRB 111209A, one of the longest gamma-ray bursts (GRBs) ever observed, is linked to SN 2011kl, which is the most luminous GRB supernova (SN) detected so far. Several lines of evidence indicate that this GRB-SN is powered by a magnetar central engine. Aims. We place SN 2011kl into the context of large samples of SNe, addressing in more detail the question of whether this GRB-SN could be radioactively powered, and whether it represents an extreme version of a GRB-SN or an underluminous superluminous SN (SLSN). Methods. We modelled SN 2011kl using SN 1998bw as a template and derived a bolometric light curve including near-infrared data. We compared the properties of SN 2011kl to literature results on stripped-envelope and SLSNe. Results. A comparison in the k, s context, i.e. comparing SN 2011kl to SN 1998bw templates in terms of luminosity and light-curve stretch, clearly shows SN 2011kl is the most luminous GRB-SN to date and is spectrally very dissimilar to other events because it is significantly bluer/hotter. Although SN 2011kl does not reach the classical luminosity threshold of SLSNe and evolves faster than any of these objects, it resembles SLSNe more than the classical GRB-associated broad-lined Type Ic SNe in several aspects. Conclusions. GRB 111209A was a very energetic event, both at early (prompt emission) and at very late (SN) times. We show in a companion publication that with the exception of the extreme duration, the GRB and afterglow parameters are in agreement with the known distributions for these parameters. SN 2011kl, on the other hand, is exceptional both in luminosity and spectral characteristics, indicating that GRB 111209A was likely not powered by a standard-model collapsar central engine, further supporting our earlier conclusions. Instead, it reveals the possibility of a direct link between GRBs and SLSNe.