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arXiv 2609.22426astro-ph.HE

GRB 220706A:一个具有持续一个月引擎和明亮超新星的伽马射线暴

GRB 220706A: a gamma-ray burst with a month-long engine and a luminous supernova

Benjamin P. Gompertz, Nusrin Habeeb, Dheeraj R. Pasham, Antonio de Ugarte Postigo, Daniele B. Malesani, Phil A. Evans, Kim L. Page, Ben Rayson, J. Feliciano Agu… 展开作者

Benjamin P. Gompertz, Nusrin Habeeb, Dheeraj R. Pasham, Antonio de Ugarte Postigo, Daniele B. Malesani, Phil A. Evans, Kim L. Page, Ben Rayson, J. Feliciano Agui Fernandez, Michael Bremer, Andrew J. Levan, Genevieve Schroeder, Nial R. Tanvir, Christina C. Thone, Eric Burns, Valerio D'Elia, Massimiliano De Pasquale, Dimple, Dieter Hartmann, Pall Jakobsson, Sylvio Klose, Antonio Martin-Carrillo, Matt Nicholl, Ana M. Nicuesa Guelbenzu, David O'Neill, Giovanna Pugliese, Arne Rau, Andrea Rossi, Jesper Sollerman, Rhaana Starling, Darach Watson, Isabelle Worssam, Makenzie E. Wortley

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中文总结 AI 辅助

GRB 220706A在红移0.8577处展现持续至静止系27天的耀发活动,为迄今最晚的引擎活动,并伴随类似SN 2011kl的超亮超新星,对超长GRB前身星模型提出挑战。

中文摘要 AI 辅助

虽然许多长伽马射线暴(GRB)的前身星已被确认为大质量、剥离包层、快速自转恒星的核心坍缩,但有人提出,持续时间分布极长端的暴可能是‘超长’GRB的独立群体。这些暴的持续时间达数千秒或更长,难以与通常假设产生更‘标准’长GRB的致密沃尔夫-拉叶星的引擎时标相协调。在此,我们展示了GRB 220706A的观测结果,其中X射线后续观测揭示了持续到触发后约51天的耀发活动。在测得红移z = 0.8577处,这对应于GRB静止系中的27天,代表了迄今在GRB中观测到的最晚中心引擎活动,比之前的纪录晚约21个静止系天。我们还识别出一个可能的超新星(SN),在考虑推断的光学消光0.9 ≤ A_V ≤ 3.6星等(由间接论证约束)后,其峰值绝对星等为M_r ≤ -20.25,类似于伴随超长GRB 111209A的高能SN 2011kl,并与超亮超新星一致。我们讨论了GRB 220706A对超长GRB前身星模型以及极晚中心引擎活动可能供能机制的影响。

英文摘要

While the progenitors of many long gamma-ray bursts (GRBs) are well established as the core collapse of very massive, envelope-stripped, rapidly-rotating stars, it has been suggested that bursts at the extremely long end of the duration distribution may be a separate population of `ultra-long' GRBs. With durations of thousands of seconds or more, these bursts are difficult to reconcile with the engine timescales expected from the compact Wolf-Rayet stars that are typically assumed to produce more `standard' long GRBs. Here, we present observations of GRB~220706A, where X-ray follow-up reveals flaring episodes that last until $\approx 51$ days after trigger. At the measured redshift of $z = 0.8577$, this corresponds to 27 days in the GRB rest frame, and represents the latest central engine activity ever observed in a GRB by a margin of $\approx 21$ rest-frame days. We also identify a likely supernova (SN) which, when accounting for the inferred optical extinction of $0.9 \leq A_V \leq 3.6$ mag (constrained by indirect arguments), has a peak absolute magnitude of $M_r \leq -20.25$, resembling the energetic SN\,2011kl found accompanying ultra-long GRB\,111209A, and consistent with super-luminous SNe. We discuss the implications GRB~220706A has for ultra-long GRB progenitor models and possible powering mechanisms for the extremely late central engine activity.

发表机构

  • University of Birmingham(伯明翰大学)
  • University of Leicester(莱斯特大学)
  • Eureka Scientific(尤里卡科学公司)
  • Aix Marseille Univ.(艾克斯-马赛大学)
  • CNRS(法国国家科学研究中心)
  • CNES(法国国家空间研究中心)
  • Cosmic Dawn Center (DAWN)(宇宙黎明中心)
  • Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所)
  • Centro Astronómico Hispano en Andalucía, Observatorio de Calar Alto(安达卢西亚西班牙天文中心,卡拉阿托天文台)
  • Institut de Radio Astronomie Millimétrique (IRAM)(毫米波射电天体物理研究所)
  • Radboud University(拉德堡德大学)
  • University of Warwick(华威大学)

机构由 AI 辅助整理,请以论文原文为准。

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