Results 51 to 60 of about 211,583 (346)
Jets in a Gamma-Ray Burst during Its Prompt Emission: Evolution of the Lorentz Factor
The Astrophysical Journal, 2023 Knowledge about the Lorentz factor and its evolution of relativistic jets in gamma-ray bursts (GRBs) is crucial to understand their physics. An exact value of the bulk Lorentz factor can be estimated based on a high-energy spectral cutoff, which may ...
Jing Li +8 more
doaj +1 more source
The Physics of Gamma-Ray Bursts
, 2018 Gamma-ray bursts (GRBs) are the most luminous explosions in the universe, which within seconds release energy comparable to what the Sun releases in its entire lifetime. The field of GRBs has developed rapidly and matured over the past decades.
Bing Zhang
semanticscholar +1 more source
A long-duration gamma-ray burst with a peculiar origin [PDF]
Nature, 2022 It is generally believed that long-duration gamma-ray bursts (GRBs) are associated with massive star core collapse1, whereas short-duration GRBs are associated with mergers of compact star binaries2.
J. Yang +9 more
semanticscholar +1 more source
Spectral Hardness and Evolution of Swift Gamma-Ray Bursts and X-Ray Afterglows
The Astrophysical Journal, 2023 Spectral hardness of gamma-ray bursts can be characterized by either hardness ratio or peak energy, and the inconsistency of these parameters can reflect spectral diversity and complexity.
X. Y. Du +6 more
doaj +1 more source
Are there MeV gamma-ray bursts? [PDF]
AIP Conference Proceedings, 1996 It is often stated that gamma-ray bursts (GRBs) have typical energies of several hundred keV. Is this a real feature of GRBs or is it due to an observational bias? We consider the possibility that bursts of a given bolometric luminosity occur with a hardness distribution $p(H)d \log H \propto H^ d \log H$. We model the detection efficiency of BATSE as
Tsvi Piran, Ramesh Narayan
openaire +4 more sources
Optical and Near-infrared Observations of the Distant but Bright “New Year’s Burst” GRB 220101A
The Astrophysical Journal, 2023 High-redshift gamma-ray bursts (GRBs) are useful to probe the early Universe, but only a few candidates have been detected so far. Here, we report the optical and near-infrared observations of the afterglow of a relatively high-redshift event GRB 220101A,
Zi-Pei Zhu +28 more
doaj +1 more source
Cosmic Ray and Neutrino Emission from Gamma-Ray Bursts with a Nuclear Cascade [PDF]
, 2017 We discuss neutrino and cosmic-ray emission from Gamma-Ray Bursts (GRBs) with the injection of nuclei, where we take into account that a nuclear cascade from photo-disintegration can fully develop in the source.
D. Biehl +3 more
semanticscholar +1 more source
Burst Image Restoration and Enhancement [PDF]
arXiv, 2021 Modern handheld devices can acquire burst image sequence in a quick succession. However, the individual acquired frames suffer from multiple degradations and are misaligned due to camera shake and object motions. The goal of Burst Image Restoration is to effectively combine complimentary cues across multiple burst frames to generate high-quality ...
arxiv
AN ALL-SKY SEARCH FOR THREE FLAVORS OF NEUTRINOS FROM GAMMA-RAY BURSTS WITH THE ICECUBE NEUTRINO OBSERVATORY [PDF]
, 2016 We present the results and methodology of a search for neutrinos produced in the decay of charged pions created in interactions between protons and gamma-rays during the prompt emission of 807 gamma-ray bursts (GRBs) over the entire sky.
I. C. M. Aartsen +315 more
semanticscholar +1 more source
New Astronomy, 2000 32 pages, 8 figures, accepted for publication in New ...
Gerald E. Brown +5 more
openaire +5 more sources