Results 1 to 10 of about 249,127 (326)

Thermal and Nonthermal Emission from a Peculiar Long-duration GRB 211211A

open access: yesThe Astrophysical Journal, 2023
Long-duration GRB 211211A that lacks a supernova emission even down to very stringent limits at such a low redshift z = 0.076 and is associated with kilonova emission, suggests that its physical origin is from a binary compact star merger. By reanalyzing
Xue-Zhao Chang   +4 more
doaj   +1 more source

Physics of Gamma-Ray Bursts Prompt Emission [PDF]

open access: yes, 2015
In recent years, our understanding of gamma-ray bursts (GRB) prompt emission has been revolutionized, due to a combination of new instruments, new analysis methods, and novel ideas.
A. Pe’er
semanticscholar   +1 more source

GRB 200829A: External-shock Origin of the Very Early Prompt Emission?

open access: yesThe Astrophysical Journal, 2023
Long-duration GRB 200829A was detected by Fermi-GBM and Swift-BAT/XRT, and then rapidly observed by other ground-based telescopes. It has a weak γ -ray emission in the very early phase and is followed by a bright spiky γ -ray emission pulse.
Jing Li   +8 more
doaj   +1 more source

Choked Jets and Low-Luminosity Gamma-Ray Bursts as Hidden Neutrino Sources [PDF]

open access: yes, 2015
We consider gamma-ray burst (GRB) jets that are choked by extended material as sources of high-energy cosmic neutrinos. We take into account the jet propagation physics both inside the progenitor star and the surrounding dense medium.
Nicholas Senno, K. Murase, P. Mészáros
semanticscholar   +1 more source

Three-stage Collapse of the Long Gamma-Ray Burst from GRB 160625B Prompt Multiwavelength Observations [PDF]

open access: gold, 2023
V. Lipunov   +39 more
openalex   +1 more source

Photospheric Emission of Gamma-Ray Bursts [PDF]

open access: yes, 2017
We review the physics of GRB production by relativistic jets that start highly opaque near the central source and then expand to transparency. We discuss dissipative and radiative processes in the jet and how radiative transfer shapes the observed ...
A. Beloborodov, P. Mészáros
semanticscholar   +1 more source

SEARCH FOR PROMPT NEUTRINO EMISSION FROM GAMMA-RAY BURSTS WITH ICECUBE [PDF]

open access: yesAstrophysical Journal, 2014
We present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino, compatible with the atmospheric neutrino background, was found in coincidence with one
I. C. M. Aartsen   +301 more
semanticscholar   +1 more source

AN UPPER BOUND ON NEUTRON STAR MASSES FROM MODELS OF SHORT GAMMA-RAY BURSTS [PDF]

open access: yes, 2015
The discovery of two neutron stars with gravitational masses ≈ 2 M ⊙ ?> has placed a strong lower limit on the maximum mass of nonrotating neutron stars, and with it a strong constraint on the properties of cold matter beyond nuclear density.
S. Lawrence   +3 more
semanticscholar   +1 more source

On the Gamma Ray Burst Origin of Extremely Energetic Cosmic Rays

open access: yes, 2009
Air shower experiments have detected cosmic ray events of energies upto 300 EeV. Most likely these cosmic rays have originated from compact objects. Their exact sources are yet to be identified.
Abraham   +39 more
core   +2 more sources

GRB 221009A and the Apparently Most Energetic Gamma-Ray Bursts

open access: yesThe Astrophysical Journal
Gamma-ray bursts (GRBs) are often referred to as the most luminous explosions in the Universe, due to their short and highly luminous prompt emission.
Jean-Luc Atteia   +9 more
doaj   +1 more source

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