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If double neutron star mergers leave behind a massive magnetar rather than a black hole, a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB) - GWB association or there is…

高能天体物理现象 · 物理学 2015-06-12 He Gao , Xuan Ding , Xue-Feng Wu , Bing Zhang , Zi-Gao Dai

A subset of short gamma-ray bursts (sGRBs) have been found to be characterized by near-infrared/optical bumps at $\sim 1$ days, some of which exhibit almost concurrent X-ray flares. Although the near-infrared/optical bumps may be a…

高能天体物理现象 · 物理学 2018-03-21 Wei-Li Lin , Ling-Jun Wang , Zi-Gao Dai

Superluminous supernovae (SLSNe) are massive star explosions too luminous to be powered by traditional energy sources, such as radioactive 56Ni. These transients may instead be powered by a central engine, such as a millisecond pulsar or…

高能天体物理现象 · 物理学 2021-08-25 Indrek Vurm , Brian D. Metzger

Binary neutron-star (BNS) mergers are accompanied by multi-messenger emissions, including gravitational wave (GW), neutrino, and electromagnetic signals. Some fraction of BNS mergers may result in a rapidly spinning magnetar as a remnant,…

高能天体物理现象 · 物理学 2025-08-22 Mainak Mukhopadhyay , Shigeo S. Kimura , Brian D. Metzger

The gamma-ray burst (GRB) jet powers the afterglow emission by shocking the surrounding medium, and radio afterglow can now be routinely observed to almost a year after the explosion. Long-duration GRBs are accompanied by supernovae (SNe)…

高能天体物理现象 · 物理学 2015-10-09 Rodolfo Barniol Duran , Dimitrios Giannios

We study the broadband radiation behavior of a kilonova ejecta-pulsar wind nebula (PWN) system. In this model, we jointly fit the observations of AT 2017gfo in UV-optical-IR bands and the late-time X-ray afterglow of GRB 170817A. Our work…

高能天体物理现象 · 物理学 2022-04-06 Jia Ren , Zi-Gao Dai

We present the main observational features expected for GRBs that occur inside pulsar wind bubbles (PWBs). This is the most natural outcome of supranova model where initially a supernova explosion takes place, leaving a supra-massive NS,…

天体物理学 · 物理学 2007-05-23 Jonathan Granot , Dafne Guetta

Short Gamma-Ray Bursts (GRBs), brief intense emission of $\gamma-$rays characterized by a duration shorter than 2 seconds that are plausibly powered by the coalescence of binary neutron stars, are believed to be strong gravitational wave…

高能天体物理现象 · 物理学 2013-11-27 Yi-Zhong Fan , Xue-Feng Wu , Da-Ming Wei

The contemporaneous detection of gravitational waves and gamma rays from the GW170817/GRB 170817A, followed by kilonova emission a day after, confirmed compact binary neutron-star mergers as progenitors of short-duration gamma-ray bursts…

The favored progenitor model for Gamma-ray Bursts (GRBs) with Supernova (SN) association is the core collapse of massive stars. One possible outcome of such a collapse is a rapidly spinning, strongly magnetized neutron star ("magnetar"). We…

高能天体物理现象 · 物理学 2018-08-08 Hou-Jun Lü , Lin Lan , Bing Zhang , En-Wei Liang , David Alexander Kann , Shen-Shi Du , Jun Shen

We present the main observational features expected for Gamma-Ray Bursts (GRBs) that occur inside pulsar wind bubbles (PWBs). This is the most natural outcome of the supranova model, where initially a supernova (SN) explosion takes place,…

天体物理学 · 物理学 2007-05-23 Dafne Guetta , Jonathan Granot

A scenario is proposed that explains both the observed high pulsar velocities and extragalactic gamma-ray bursts (GRBs). The model involves an ultra- relativistic jet from a supernova (SN), that produces a GRB and its afterglow, whose…

天体物理学 · 物理学 2009-10-30 Renyue Cen

A millisecond magnetar engine has been widely suggested to exist in gamma-ray burst (GRB) phenomena, in view of its substantial influences on the GRB afterglow emission. In this paper, we investigate the effects of the magnetar engine on…

高能天体物理现象 · 物理学 2022-09-07 Zhen-Dong Zhang , Yun-Wei Yu , Liang-Duan Liu

Tenuous wind bubbles, which are formed by the spin-down activity of central compact remnants, are relevant in some models of fast radio bursts (FRBs) and super-luminous supernovae. We study their high-energy signatures, focusing on the role…

高能天体物理现象 · 物理学 2019-01-23 Kohta Murase , Kazumi Kashiyama , Peter Meszaros

Short gamma-ray bursts (GRBs) are the aftermath of compact binary mergers involving neutron stars. If the merger remnant is a millisecond magnetar instead of a black hole, a significant proportion of the rotational energy deposited to the…

高能天体物理现象 · 物理学 2024-01-23 Ankur Ghosh , C. S. Vaishnava , L. Resmi , Kuntal Misra , K. G. Arun , Amitesh Omar , N. K. Chakradhari

Binary neutron star (BNS) mergers are the leading model to explain the phenomenology of short gamma-ray bursts (SGRBs), which are among the most luminous explosions in the universe. Recent observations of long-lasting X-ray afterglows of…

高能天体物理现象 · 物理学 2016-03-16 Daniel M. Siegel , Riccardo Ciolfi

Young, rapidly spinning magnetars are invoked as central engines behind a diverse set of transient astrophysical phenomena, including gamma-ray bursts (GRB), super-luminous supernovae (SLSNe), fast radio bursts (FRB), and binary neutron…

高能天体物理现象 · 物理学 2018-09-12 Ben Margalit , Brian D. Metzger , Edo Berger , Matt Nicholl , Tarraneh Eftekhari , Raffaella Margutti

Binary neutron star (BNS) mergers are one of the proposed origins for both repeating and non-repeating fast radio bursts (FRBs), which associates FRBs with gravitational waves and short gamma-ray bursts (GRBs). In this work, we explore…

高能天体物理现象 · 物理学 2020-08-18 Haoxiang Lin , Tomonori Totani

A binary neutron star (BNS) merger has been widely argued to be one of the progenitors of a short gamma-ray burst (SGRB). This central engine can be verified if its gravitational-wave (GW) event is detected simultaneously. Once confirmed,…

高能天体物理现象 · 物理学 2017-10-03 Di Xiao , Liang-Duan Liu , Zi-Gao Dai , Xue-Feng Wu

The joint detection of GW 170817 and GRB 170817A indicated that at least a fraction of short gamma ray bursts (SGRBs) originate from binary neutron star (BNS) mergers. One possible remnant of a BNS merger is a rapidly rotating, strongly…

高能天体物理现象 · 物理学 2020-02-26 Liang-Duan Liu , He Gao , Bing Zhang
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