A kilonova following a long-duration gamma-ray burst at 350 Mpc-猫眼课题宝

DOI：

10.1038/s41586-022-05390-w

发表时间：

2022-04

期刊：

Nature

影响因子：

64.8

通讯作者：

中科院分区：

综合性期刊1区

文献类型：

作者：

J. Rastinejad;B. Gompertz;A. Levan;W. Fong;M. Nicholl;G. Lamb;D. Malesani;A. Nugent;S. Oates;N. Tanvir;A. de Ugarte Postigo;C. Kilpatrick;C. Moore;B. Metzger;M. Ravasio;A. Rossi;G. Schroeder;J. Jencson;D. Sand;N. Smith;José Feliciano Agüí Fernández;E. Berger;P. Blanchard;R. Chornock;B. Cobb;M. De Pasquale;J. Fynbo;L. Izzo;D. A. Kann;T. Laskar;E. Marini;K. Paterson;A. R. Escorial;H. Sears;C. Thöne

伽马射线暴（GRB）分为两类：长GRB来自大质量恒星的核心坍缩（例如，参考文献），短GRB形成于两个致密天体的合并。虽然通常在伽马射线持续时间为2秒时划分两个种群，但基于持续时间的分类并不总是映射到祖先。值得注意的是，伽玛暴与短（102秒）尖峰的即时伽玛射线发射，随后延长，光谱较软的扩展发射（EE-SGRB）已被建议产生于紧凑的对象合并，-。致密天体合并是唯一被确认的快速中子俘获（r-过程）核合成的场所，具有重要的天体物理学意义，以所谓的千新星，-的形式被观测到。在这里，我们报告发现了一个可能的千诺瓦与附近（350 Mpc），持续时间分钟的GRB 211211 A。kilonova意味着前身是一个紧凑的对象合并，这表明长，复杂的光变曲线的伽玛暴可以从合并事件产生。GRB 211211 A的千诺瓦具有与引力波（GW）探测到的双中子星星（BNS）合并GW 170817（参考文献）相似的亮度、持续时间和颜色。进一步寻找与长伽玛暴相一致的GW信号是未来多信使天文学的一条有前途的路线。

Gamma-ray bursts (GRBs) are divided into two populations,; long GRBs that derive from the core collapse of massive stars (for example, ref. ) and short GRBs that form in the merger of two compact objects,. Although it is common to divide the two populations at a gamma-ray duration of 2 s, classification based on duration does not always map to the progenitor. Notably, GRBs with short (≲2 s) spikes of prompt gamma-ray emission followed by prolonged, spectrally softer extended emission (EE-SGRBs) have been suggested to arise from compact object mergers, –. Compact object mergers are of great astrophysical importance as the only confirmed site of rapid neutron capture (r-process) nucleosynthesis, observed in the form of so-called kilonovae, , , , –. Here we report the discovery of a possible kilonova associated with the nearby (350 Mpc), minute-duration GRB 211211A. The kilonova implies that the progenitor is a compact object merger, suggesting that GRBs with long, complex light curves can be spawned from merger events. The kilonova of GRB 211211A has a similar luminosity, duration and colour to that which accompanied the gravitational wave (GW)-detected binary neutron star (BNS) merger GW170817 (ref. ). Further searches for GW signals coincident with long GRBs are a promising route for future multi-messenger astronomy.

A kilonova following a long-duration gamma-ray burst at 350 Mpc

文献摘要

被引文献

相似文献