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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

The origin and progenitors of short-hard gamma-ray bursts remain a puzzle and a highly debated topic. Recent Swift observations suggest that these GRBs may be related to catastrophic explosions in degenerate compact stars, denoted as "Type…

High Energy Astrophysical Phenomena · Physics 2011-01-20 Francisco J. Virgili , Bing Zhang , Paul O'Brien , Eleonora Troja

Some short GRBs are followed by longer extended emission, lasting anywhere from ~10 to ~100 s. These short GRBs with extended emission (EE) can possess observational characteristics of both short and long GRBs (as represented by GRB…

High Energy Astrophysical Phenomena · Physics 2015-08-07 Y. Kaneko , Z. F. Bostanci , E. Gogus , L. Lin

Short gamma-ray bursts (SGRBs) are thought to be primarily associated with binary neutron star (BNS) mergers. The SGRB population can therefore be scrutinized to look for signatures of the delay time between the formation of the progenitor…

High Energy Astrophysical Phenomena · Physics 2026-01-08 Matteo Pracchia , Om Sharan Salafia

The short Gamma Ray Bursts (GRBs) are the aftermath of the merger of binary compact objects (neutron star -- neutron star or neutron star -- black hole systems). With the simultaneous detection of Gravitational Wave (GW) signal from GW…

High Energy Astrophysical Phenomena · Physics 2024-01-23 Ankur Ghosh , Kuntal Misra , C. S. Vaishnava , L. Resmi , K. G. Arun , Amitesh Omar , Dimple , N. K. Chakradhari

For decades, gamma-ray bursts (GRBs) have been broadly divided into `long'- and `short'-duration bursts, lasting more or less than 2s, respectively. However, this dichotomy does not map perfectly to the two progenitor channels that are…

Short-hard gamma-ray bursts (SHBs) may arise from gravitational wave (GW) driven mergers of double neutron star (DNS) systems. DNSs may be "primordial" or can form dynamically by binary exchange interactions in globular clusters during…

Astrophysics · Physics 2014-10-13 Clovis Hopman , Dafne Guetta , Eli Waxman , Simon Portegies Zwart

Using the BATSE peak flux distribution we rederive the short GRBs luminosity function and compare it with the observed redshift distribution of long bursts. We show that both distributions are compatible with the assumption that short as…

Astrophysics · Physics 2009-11-10 Dafne Guetta , Tsvi Piran

We study the properties of short gamma-ray bursts (GRBs), based on the assumption that they are all connected to the binary neutron star mergers, whose formation mechanism contains a large amount of uncertainty. In particular, the merger…

Astrophysics · Physics 2010-11-15 Shin'ichiro Ando

For gamma-ray bursts (GRBs) with durations greater than two seconds (so-called long GRBs), the intrinsic prompt gamma-ray emission appears, on average, to last longer for bursts at lower redshifts. We explore the nature of this…

We study the high-energy properties of GRB 181123B, a short gamma-ray burst (sGRB) at redshift $z\approx$1.75. We show that, despite its nominal short duration with $T_{90}<$2 s, this burst displays evidence of a temporally extended…

High Energy Astrophysical Phenomena · Physics 2022-07-05 S. Dichiara , E. Troja , P. Beniamini , B. O'Connor , M. Moss , A. Y. Lien , R. Ricci , L. Amati , G. Ryan , T. Sakamoto

Approximately 1/4-1/2 of short duration Gamma-Ray Bursts are followed by variable X-ray emission lasting ~ 100 s with a fluence comparable or exceeding that of the initial burst itself. The long duration and significant energy of this…

High Energy Astrophysical Phenomena · Physics 2015-05-28 N. Bucciantini , B. D. Metzger , T. A. Thompson , E. Quataert

To test whether the short GRB rates, redshift distribution and host galaxies are consistent with current theoretical predictions, we use avery large database of population synthesis calculations to examine BH-NS and NS-NS merger rates in…

Astrophysics · Physics 2010-11-11 R. O'Shaughnessy , V. Kalogera , K. Belczynski

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…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Xiao-Hong Cui , Junichi Aoi , Shigehiro Nagataki , Ren-Xin Xu

The recent association of several short gamma-ray bursts (GRBs) with early type galaxies with low star formation rate demonstrates that short bursts arise from a different progenitor mechanism than long bursts. However, since the duration…

Astrophysics · Physics 2011-09-30 Jay P. Norris , Jerry T. Bonnell

Merging compact binaries are the one source of gravitational radiation so far identified. Because short-period systems which will merge in less than a Hubble time have already been observed as binary pulsars, they are important both as…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Marcel Zemp , Enrico Ramirez-Ruiz , Jürg Diemand

The long gamma ray bursts (GRBs) may arise from the core collapse of massive stars. However, the long GRB rate does not follow the star formation rate (SFR) at high redshifts. In this Letter, we focus on the binary merger model and consider…

High Energy Astrophysical Phenomena · Physics 2017-11-15 Tomoya Kinugawa , Katsuaki Asano

Context. The progenitors of short gamma-ray bursts (SGRBs) have not yet been well identified. The most popular model is the merger of compact object binaries (NS-NS/NS-BH). However, other progenitor models cannot be ruled out. The…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Jing-Meng Hao , Ye-Fei Yuan

The plateau in the duration distribution of long Gamma-Ray Bursts (LGRBs) provides a direct observational evidence for the Collapsar model. The plateau reflects the fact that the observed duration satisfies: $T_{90} = t_{e}-t_{b}$ where…

High Energy Astrophysical Phenomena · Physics 2017-10-11 Reetanjali Moharana , Tsvi Piran

Compact object mergers are multi-messenger sources and progenitors of some gamma-ray bursts (GRBs), primarily understood by gamma-ray observations, while poorly constrained in the prompt low-energy phase. A long-lasting X-ray emission was…

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