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Rowlinson et al. 2023 recently claimed the detection of a coherent radio flash 76.6 minutes after a short gamma-ray burst. They proposed that the radio emission may be associated with a long-lived neutron star engine. We show through…

高能天体物理现象 · 物理学 2025-06-03 Nikhil Sarin , Teagan A. Clarke , Spencer J. Magnall , Paul D. Lasky , Brian D. Metzger , Edo Berger , Navin Sridhar

Recently, the detection of a coherent radio flash associated with short-duration GRB 201006A, occurring 76.6 minutes after the burst, has attracted great attention. However, the physical origin of the coherent radio flash remains under…

高能天体物理现象 · 物理学 2024-10-15 Xiao Tian , HouJun Lü , Yong Yuan , Xing Yang , HaoYu Yuan , ShuangXi Yi , WenLong Zhang , EnWei Liang

The mergers of two neutron stars are typically accompanied by broad-band electromagnetic emission from either a relativistic jet or a kilonova. It has also been long predicted that coherent radio emission will occur during the merger phase…

The presence and detectability of coherent radio emission from compact binary mergers (containing at least one neutron star) remains poorly constrained due to large uncertainties in the models. These compact binary mergers may initially be…

高能天体物理现象 · 物理学 2019-09-04 A. Rowlinson , G. E. Anderson

The multi-messenger observation of gamma-ray burst (GRB)\,170817A from the nearby binary neutron-star merger GW170817 demonstrated that low-energy $\gamma$-ray emission can be observed at relatively large angles from GRB jet axes. If such…

高能天体物理现象 · 物理学 2019-03-20 Imre Bartos , Kyung-hwan Lee , Alessandra Corsi , Zsuzsa Marka , Szabolcs Marka

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,…

Here we present stringent low-frequency 185MHz limits on coherent radio emission associated with a short gamma-ray burst (SGRB). Our observations of the short GRB 180805A were taken with the upgraded Murchison Widefield Array (MWA)…

Here we present a low frequency (170-200MHz) search for coherent radio emission associated with nine short GRBs detected by the Swift and/or Fermi satellites using the Murchison Widefield Array (MWA) rapid-response observing mode. The MWA…

Gamma-ray bursts (GRBs) offer a powerful window to probe the progenitor systems responsible for the formation of heavy elements through the rapid neutron capture (r-) process, thanks to their exceptional luminosity, which allows them to be…

Fast radio bursts (FRBs) are mysterious bright millisecond-duration radio bursts at cosmological distances. While young magnetars have been put forward as the leading source candidate, recent observations suggest there may be multiple FRB…

高能天体物理现象 · 物理学 2022-12-02 Alexandra Moroianu , Linqing Wen , Clancy W. James , Shunke Ai , Manoj Kovalam , Fiona Panther , Bing Zhang

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

Relativistic jets generated in gamma-ray bursts (GRBs) produce luminous transient events, yet the fundamentals of jet composition and radiation mechanisms remain unclear. One means of identifying a magnetically-dominated outflow would be…

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…

GRB200522A is a short duration gamma-ray burst (GRB) at redshift $z$=0.554 characterized by a bright infrared counterpart. A possible, although not unambiguous, interpretation of the observed emission is the onset of a luminous kilonova…

高能天体物理现象 · 物理学 2021-05-12 G. Bruni , B. O'Connor , T. Matsumoto , E. Troja , T. Piran , L. Piro , R. Ricci

Compact binary mergers may have already been observed as they are the leading model for short gamma-ray bursts (sGRBs). Radioactive decay within the ejecta from these mergers is expected to produce an infra-red flare, dubbed macronova (or…

高能天体物理现象 · 物理学 2016-03-16 Assaf Horesh , Kenta Hotokezaka , Tsvi Piran , Ehud Nakar , Paul Hancock

We report the precise X-ray localization of GRB 230906A, a short duration ($T_{90}\sim$0.9 s) burst with no optical or radio counterpart. Deep imaging with the Hubble Space Telescope detects a faint galaxy (G$^\ast$; $F160W\simeq26$ AB mag)…

高能天体物理现象 · 物理学 2026-03-06 S. Dichiara , E. Troja , B. O'Connor , Y. -H. Yang , P. Beniamini , A. Galvan-Gamez , T. Sakamoto , Y. Kawakubo , J. C. Charlton

We present Very Large Array (VLA) and Atacama Large Millimeter/sub-millimeter Array ALMA radio observations of GW\,170817, the first Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo gravitational wave (GW) event from a…

We present multiwavelength (optical/near infrared/millimetre) observations of a short duration gamma-ray burst detected by Swift (GRB 050509b) collected between 0 seconds and ~18.8 days after the event. No optical, near infrared or…

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.…

高能天体物理现象 · 物理学 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 merger of a neutron star binary may result in the formation of a rapidly-spinning magnetar. The magnetar can potentially survive for seconds or longer as a supramassive neutron star before collapsing to a black hole if, indeed, it…

高能天体物理现象 · 物理学 2016-11-09 Wen-fai Fong , Brian D. Metzger , Edo Berger , Feryal Ozel
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