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The gamma-ray burst GRB 211211A and its associated kilonova-like emission were reported recently. A significant difference between this association event and GRB 170817A/AT 2017gfo is that GRB 211211A has a very long duration. In this…

高能天体物理现象 · 物理学 2023-04-26 Shu-Qing Zhong , Long Li , Zi-Gao Dai

The second brightest gamma-ray burst, GRB 230307A (with a duration $T_{90}$ ~ 40 s), exhibited characteristics indicative of a magnetar engine during the prompt emission phase. Notably, a suspected kilonova was identified in its follow-up…

高能天体物理现象 · 物理学 2024-03-18 Xiangyu Ivy Wang , Yun-Wei Yu , Jia Ren , Jun Yang , Ze-Cheng Zou , Jin-Ping Zhu

The peculiar long gamma-ray burst (GRB) event, GRB 211211A, is known for it is association with a kilonova feature. Whereas most long GRBs are thought to originate in the core collapse of massive stars, the presence of kilonova suggests GRB…

高能天体物理现象 · 物理学 2025-11-03 Xiao-Tian Xu , Bin-Bin Zhang , Yun-Lang Guo , Xiang-Dong Li

Here, we report the discovery of a kilonova associated with the nearby (350 Mpc) minute-duration GRB 211211A. In tandem with deep optical limits that rule out the presence of an accompanying supernova to $M_I > -13$ mag at 17.7 days…

The progenitors of gamma-ray bursts (GRBs) have long been an unresolved issue. GRB 230307A stands out as an exceptionally bright event, belonging to the long-duration GRBs but also exhibiting a late emission component reminiscent of a…

高能天体物理现象 · 物理学 2024-10-01 Junping Chen , Rong-Feng Shen , Wen-Jun Tan , Chen-Wei Wang , Shao-Lin Xiong , Run-Chao Chen , Bin-Bin Zhang

Mergers of double neutron stars (DNSs) could lead to the formation of a long-lived massive remnant NS, which has been previously suggested to explain the AT 2017gfo kilonova emission in the famous GW170817 event. For an NS-affected…

高能天体物理现象 · 物理学 2021-10-27 Guang-Lei Wu , Yun-Wei Yu , Jin-Ping Zhu

The LIGO-Virgo Collaboration has announced the detection of GW170817 and has associated it with GRB 170817A. These signals have been followed after 11 hours by the optical and infrared emission of AT 2017gfo. The origin of this complex…

高能天体物理现象 · 物理学 2018-10-17 J. A. Rueda , R. Ruffini , Y. Wang , U. Barres de Almeida , C. L. Bianco , Y. Chen , R. V. Lobato , C. Maia , D. Primorac , R. Moradi , J. F. Rodriguez

The discovery of the radioactively powered kilonova AT2017gfo, associated with the short-duration gamma-ray burst GRB 170817A and the gravitational wave source GW170817, has provided the first direct evidence supporting binary neutron star…

高能天体物理现象 · 物理学 2024-02-14 Meng-Hua Chen , Li-Xin Li , Qiu-Hong Chen , Rui-Chong Hu , En-Wei Liang

Based on different neutron star-white dwarf (NS-WD) population models, we investigate the prospects of gravitational-wave (GW) detections for NS-WD mergers, with the help of early warnings from two space-borne decihertz GW observatories,…

高能天体物理现象 · 物理学 2024-02-15 Yacheng Kang , Chang Liu , Jin-Ping Zhu , Yong Gao , Lijing Shao , Bing Zhang , Hui Sun , Yi-Han Iris Yin , Bin-Bin Zhang

The successful joint observation of the gravitational wave event GW170817 and its multi-wavelength electromagnetic counterparts first enables human to witness a definite merger event of two neutron stars (NSs). This historical event…

高能天体物理现象 · 物理学 2018-07-25 Yun-Wei Yu , Liang-Duan Liu , Zi-Gao Dai

GRB 211211A is a rare burst with a genuinely long duration, yet its prominent kilonova association provides compelling evidence that this peculiar burst was the result of a compact binary merger. However, the exact nature of the merging…

高能天体物理现象 · 物理学 2023-09-01 Yi-Han Iris Yin , Bin-Bin Zhang , Hui Sun , Jun Yang , Yacheng Kang , Lijing Shao , Yu-Han Yang , Bing Zhang

Here we collect three unique bursts, GRBs\,060614, 211211A and 211227A, all characterized by a long-duration main emission (ME) phase and a rebrightening extended emission (EE) phase, to study their observed properties and the potential…

高能天体物理现象 · 物理学 2022-09-07 Jin-Ping Zhu , Xiangyu Ivy Wang , Hui Sun , Yuan-Pei Yang , Zhuo Li , Rui-Chong Hu , Ying Qin , Shichao Wu

Two long-duration gamma-ray bursts were recently discovered with kilonovae, the signature of r-process element production in a compact binary merger, rather than supernovae. This has forced a re-evaluation of the long-established dichotomy…

Fast material ejected dynamically over $<10$ ms during the merger of a binary neutron-star (BNS) system can give rise to distinctive electromagnetic counterparts to the system's gravitational-wave emission that can serve as a "smoking gun"…

高能天体物理现象 · 物理学 2023-03-23 Luciano Combi , Daniel M. Siegel

The recent discovery of the neutron star merger and multi-messenger event GW170817 (also known as kilonova GRB170817A) provides an unprecedented laboratory in which to study these mysterious objects, as well as an opportunity to test…

高能天体物理现象 · 物理学 2019-01-01 Samar Safi-Harb , Neil Doerksen , Adam Rogers , Chris L. Fryer

The first neutron star (NS) merger observed by advanced LIGO and Virgo, GW170817, and its fireworks of electromagnetic counterparts across the entire electromagnetic spectrum marked the beginning of multi-messenger astronomy and…

高能天体物理现象 · 物理学 2019-12-24 Daniel M. Siegel

Recent detections of kilonova-like emission following long-duration gamma-ray bursts GRB211211A and GRB230307A have been interpreted as originating from the merger of two neutron stars. In this work, we demonstrate that these observations…

The cosmic origin of the elements heavier than iron has long been uncertain. Theoretical modelling shows that the matter that is expelled in the violent merger of two neutron stars can assemble into heavy elements such as gold and platinum…

高能天体物理现象 · 物理学 2017-10-17 Daniel Kasen , Brian Metzger , Jennifer Barnes , Eliot Quataert , Enrico Ramirez-Ruiz

Gamma-ray bursts (GRBs) have historically been divided into two classes. Short-duration GRBs are associated with binary neutron-star mergers (NSMs), while long-duration bursts are connected to a subset of core-collapse supernovae (SNe). GRB…

高能天体物理现象 · 物理学 2023-04-26 Jennifer Barnes , Brian D. Metzger
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