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Compact binary system mergers are expected to generate gravitational radiation detectable by ground-based interferometers. A subset of these, the merger of a neutron star with another neutron star or a black hole, are also the most popular…

Compact binary mergers are the strongest candidates for the progenitors of Short Gamma Ray Bursts (SGRBs). If a gravitational wave (GW) signal from the compact binary merger is observed in association with a SGRB, such a synergy can help us…

高能天体物理现象 · 物理学 2014-12-16 K. G. Arun , Hideyuki Tagoshi , Chandra Kant Mishra , Archana Pai

We searched for periodic and quasiperiodic signal in the prompt emission of a sample of 44 bright short gamma-ray bursts detected with Fermi/GBM, Swift/BAT, and CGRO/BATSE. The aim was to look for the observational signature of…

高能天体物理现象 · 物理学 2015-06-17 S. Dichiara , C. Guidorzi , F. Frontera , L. Amati

The detection of electromagnetic radiation (EM) accompanying the gravitational wave (GW) signal from the binary neutron star (BNS) merger GW170817 has revealed that these systems constitute at least a fraction of the progenitors of short…

Using the observed rate of short-duration gamma-ray bursts (GRBs) it is possible to make predictions for the detectable rate of compact binary coalescences in gravitational-wave detectors. These estimates rely crucially on the growing…

宇宙学与河外天体物理 · 物理学 2015-06-05 Hsin-Yu Chen , Daniel E. Holz

A supramassive, strongly-magnetized millisecond neutron star (NS) has been proposed to be the candidate central engine of at least some short gamma-ray bursts (SGRBs), based on the "internal plateau" commonly observed in the early X-ray…

高能天体物理现象 · 物理学 2016-11-02 Ang Li , Bing Zhang , Nai Bo Zhang , He Gao , Bin Qi , Tong Liu

The strong dependence of the neutrino annihilation mechanism on the mass accretion rate makes it difficult to explain the LGRBs with duration in excess of 100 seconds as well as the precursors separated from the main gamma-ray pulse by few…

高能天体物理现象 · 物理学 2015-05-13 M. V. Barkov , S. S. Komissarov

The fate and observable properties of gamma-ray burst jets depend crucially on their interaction with the progenitor material that surrounds the central engine. We present a semi-analytical model of such interaction, which builds upon…

高能天体物理现象 · 物理学 2020-04-29 O. S. Salafia , C. Barbieri , S. Ascenzi , M. Toffano

The spatial distribution of short Gamma-ray bursts (GRBs) in their host galaxies provide us an opportunity to investigate their origins. Based on the currently observed distribution of short GRBs relative to their host galaxies, we obtain…

高能天体物理现象 · 物理学 2015-05-18 Xiao-Hong Cui , Junichi Aoi , Shigehiro Nagataki , Ren-Xin Xu

The association of GRB170817A with GW170817 has confirmed the long-standing hypothesis that binary neutron star (BNS) mergers are the progenitors of at least some short gamma-ray bursts (SGRBs). This connection has ushered in an era in…

高能天体物理现象 · 物理学 2021-09-08 Davide Lazzati , Rosalba Perna , Riccardo Ciolfi , Bruno Giacomazzo , Diego Lopez-Camara , Brian Morsony

We use the StarTrack population synthesis code to discuss potential progenitor models of SN Ia: single degenerate scenario, semi-detached double white dwarf binary and double degenerate scenario. Using the most recent calculations of…

天体物理学 · 物理学 2009-11-10 Krzysztof Belczynski , Tomasz Bulik , Ashley J. Ruiter

What the progenitors of fast radio bursts (FRBs) are, and whether there are multiple types of progenitors are open questions. The advent of localized FRBs with host galaxy redshifts allows the various emission models to be directly tested…

高能天体物理现象 · 物理学 2020-08-20 Kelly Gourdji , Antonia Rowlinson , Ralph A. M. J. Wijers , Adam Goldstein

Short gamma-ray bursts (GRBs) are believed to be produced by relativistic jets from mergers of neutron-stars (NS) or neutron-stars and black-holes (BH). If the Lorentz-factors $\Gamma$ of jets from compact-stellar-mergers follow a similar…

高能天体物理现象 · 物理学 2016-10-05 Gavin P Lamb , Shiho Kobayashi

Short Gamma-Ray Bursts (GRBs) are explosions of cosmic origin believed to be associated with the merger of two compact objects, either two neutron stars, or a neutron star and a black hole. The presence of at least one neutron star has long…

高能天体物理现象 · 物理学 2016-04-27 Rosalba Perna , Davide Lazzati , Bruno Giacomazzo

Short and long-short gamma-ray bursts (GRBs) are widely believed to be powered by neutron star mergers. In this work, we calculate local rate of such GRBs and find a relatively high value of $\sim 786-2468~{\rm Gpc^{-3}~yr^{-1}}$ when…

高能天体物理现象 · 物理学 2026-04-09 Zhi-Ping Jin , Yuan-Zhu Wang , Yin-Jie Li , Yun Wang , Hao Wang , Shao-Peng Tang , Da-Ming Wei

We compare the luminosity function and rate inferred from the BATSE short hard bursts (SHBs) peak flux distribution with the redshift and luminosity distributions of SHBs observed by Swift/HETE II. The Swift/HETE II SHB sample is…

天体物理学 · 物理学 2010-11-11 Dafne Guetta

In order to explain the origin of skewness in the gamma-ray burst (GRB) duration distribution, a statistical model, based on the cosmological time dilation and taking into account the GRB formation rate and instrumental effects, is…

高能天体物理现象 · 物理学 2020-07-15 Mariusz Tarnopolski

We derive the luminosity function and redshift distribution of short Gamma Ray Bursts (SGRBs) using (i) all the available observer-frame constraints (i.e. peak flux, fluence, peak energy and duration distributions) of the large population…

The duration of a gamma-ray burst (GRB) is a key indicator of its physics origin, with long bursts perhaps associated with the collapse of massive stars and short bursts with mergers of neutron stars.However, there is substantial overlap in…