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In the faint short gamma-ray burst sGRB 170817A followed by the gravitational waves (GWs) from a merger of two neutron stars (NSs) GW170817, the spectral peak energy is too high to explain only by canonical off-axis emission. We investigate…

High Energy Astrophysical Phenomena · Physics 2018-11-07 Shota Kisaka , Kunihito Ioka , Kazumi Kashiyama , Takashi Nakamura

Young neutron stars (NSs) born in core-collapse explosions are promising candidates for the central engines of fast radio bursts (FRBs), since the first localized repeating burst FRB 121102 happens in a star forming dwarf galaxy, which is…

High Energy Astrophysical Phenomena · Physics 2020-03-11 F. Y. Wang , Y. Y. Wang , Yuan-Pei Yang , Y. W. Yu , Z. Y. Zuo , Z. G. Dai

The simultaneous detection of gravitational and electromagnetic waves from a binary neutron star merger has both solidified the link between neutron star mergers and short-duration gamma-ray bursts (GRBs) and demonstrated the ability of…

High Energy Astrophysical Phenomena · Physics 2018-10-10 Brandon K. Wiggins , Christopher L. Fryer , Joseph M. Smidt , Dieter H. Hartmann , Nicole Lloyd-Ronning , Chris Belcynski

We present a study of NGC 4993, the host galaxy of the GW170817 gravitational wave event, the GRB170817A short gamma-ray burst (sGRB) and the AT2017gfo kilonova. We use Dark Energy Camera imaging, AAT spectra and publicly available data,…

In the last decade, enormous progress has been achieved in the understanding of the various facets of coalescing double neutron star and neutron black hole binary systems. One hopes that the mergers of such compact binaries can be routinely…

High Energy Astrophysical Phenomena · Physics 2015-06-23 S. Rosswog

Coalescing neutron star (NS)-black hole (BH) binaries are promising sources of gravitational-waves (GWs) to be detected within the next few years by current GW observatories. If the NS is tidally disrupted outside the BH innermost stable…

High Energy Astrophysical Phenomena · Physics 2020-03-03 Stefano Ascenzi , Nicola De Lillo , Carl-Johan Haster , Frank Ohme , Francesco Pannarale

Short GRBs are produced by relativistic jets arising from binary NS-NS or NS-BH mergers. Since the detection of the first unambiguous off-axis GRB 170817A, we learned that energy distribution in the jet plays an important role in explaining…

High Energy Astrophysical Phenomena · Physics 2024-01-19 Gerardo Urrutia , Agnieszka Janiuk

The observations of jet breaks in the afterglows of short gamma-ray bursts (SGRBs) indicate that the jet has a small opening angle of < 10{\deg}. The collimation mechanism of the jet is a longstanding theoretical problem. We numerically…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Hiroki Nagakura , Kenta Hotokezaka , Yuichiro Sekiguchi , Masaru Shibata , Kunihito Ioka

We investigate the prospects for joint low-latency gravitational wave (GW) detection and prompt electromagnetic (EM) follow-up observations of coalescing binary neutron stars (BNSs). For BNS mergers associated with short duration gamma-ray…

High Energy Astrophysical Phenomena · Physics 2016-03-23 Q. Chu , E. J. Howell , A. Rowlinson , H. Gao , B. Zhang , S. J. Tingay , M. Boer , L. Wen

One of the most surprising gamma-ray burst (GRB) features discovered with the Swift-X ray telescope (XRT) is a plateau phase in the early X-ray afterglow light curves. These plateaus are observed in the majority of long GRBs, while their…

High Energy Astrophysical Phenomena · Physics 2025-01-09 Luca Guglielmi , Giulia Stratta , Simone Dall'Osso , Paramvir Singh , Marcella Brusa , Rosalba Perna

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…

High Energy Astrophysical Phenomena · Physics 2022-09-07 Jin-Ping Zhu , Xiangyu Ivy Wang , Hui Sun , Yuan-Pei Yang , Zhuo Li , Rui-Chong Hu , Ying Qin , Shichao Wu

The merger of compact binary stars produces short gamma-ray bursts (sGRBs), involving channels such as neutron star - neutron star (BNS) and neutron star - black hole (NS-BH). The association between sGRB 170817A and gravitational wave GW…

High Energy Astrophysical Phenomena · Physics 2025-01-14 Qin-Mei Li , Qi-Bin Sun

Recent observational and theoretical results suggest that Short-duration Gamma-Ray Bursts (SGRBs) are originated by the merger of compact binary systems of two neutron stars or a neutron star and a black hole. The observation of SGRBs with…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-10 Carlo Enrico Petrillo , Alexander Dietz , Marco Cavaglià

The multi-messenger discovery of gravitational waves (GWs) and light from the binary neutron star (NS) merger GW170817, associated with Gamma-Ray Burst (GRB) 170817A and kilonova AT2017gfo, has marked the start of a new era in astrophysics.…

High Energy Astrophysical Phenomena · Physics 2021-02-24 C. Grandorf , J. McCarty , P. Rajkumar , H. Harbin , K. H. Lee , A. Corsi , I. Bartos , Z. Marka , A. Balasubramanian , S. Marka

The search for multi-messenger signals of binary black hole (BBH) mergers is crucial to understanding the merger process of BBH and the relative astrophysical environment. Considering BBH mergers occurring in the active galactic nuclei…

High Energy Astrophysical Phenomena · Physics 2023-11-07 Zi-Hang Zhou , Kai Wang

The recent localization of some short-hard gamma ray bursts (GRBs) in galaxies with low star formation rates has lent support to the suggestion that these events result from compact object binary mergers. We discuss how new simulations in…

Astrophysics · Physics 2009-11-11 Joshua A. Faber , Thomas W. Baumgarte , Stuart L. Shapiro , Keisuke Taniguchi

The merger locations of binary neutron stars (BNSs) encode their galactic kinematics and provide insights into their connection to short gamma-ray bursts (SGRBs). In this work, we use the sample of Galactic BNSs with measured proper motions…

High Energy Astrophysical Phenomena · Physics 2023-10-24 Nicola Gaspari , Andrew J. Levan , Ashley A. Chrimes , Gijs Nelemans

The merger of a double neutron star (NS-NS) binary may result in a rapidly rotating massive NS with an extremely strong magnetic field (i.e., a millisecond magnetar). In this case, the magnetic spin-down of the NS remnant provides an…

High Energy Astrophysical Phenomena · Physics 2017-07-06 He Gao , Bing Zhang , Hou-Jun Lü , Ye Li

We introduce a new, powerful method to constrain properties of neutron stars (NSs). We show that the total mass of GW170817 provides a reliable constraint on the stellar radius if the merger did not result in a prompt collapse as suggested…

High Energy Astrophysical Phenomena · Physics 2017-12-13 Andreas Bauswein , Oliver Just , Hans-Thomas Janka , Nikolaos Stergioulas

The product of a compact star merger is usually hypothesized to be a hyperaccreting black hole, typically resulting in a gamma-ray burst (GRB) with a duration shorter than 2~s. However, recent observations of GRB~211211A and GRB~230307A,…

High Energy Astrophysical Phenomena · Physics 2025-09-22 Run-Chao Chen , Bin-Bin Zhang , Chen-Wei Wang , Wen-Jun Tan , Shao-Lin Xiong , Jun Yang , Yi-Han Iris Yin , Shuang-Nan Zhang , Bing Zhang
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