Results 51 to 60 of about 244,549 (345)

A kilonova following a long-duration gamma-ray burst at 350 Mpc [PDF]

open access: yesNature, 2022
Gamma-ray bursts (GRBs) are divided into two populations1,2; long GRBs that derive from the core collapse of massive stars (for example, ref. 3) and short GRBs that form in the merger of two compact objects4,5.
J. Rastinejad   +34 more
semanticscholar   +1 more source

Jets in a Gamma-Ray Burst during Its Prompt Emission: Evolution of the Lorentz Factor

open access: yesThe 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

COMPTEL observations of cosmic gamma‐ray bursts [PDF]

open access: yes, 1991
The imaging γ‐ray telescope COMPTEL on board NASA’s Compton Gamma‐Ray Observatory (GRO) has observed many cosmic gamma‐ray bursts during the early mission phase of GRO. COMPTEL records time‐resolved burst spectra over 0.1 MeV to 10 MeV energies, and, for
Bennett, K   +26 more
core   +2 more sources

Short gamma-ray bursts at the dawn of the gravitational wave era [PDF]

open access: yes, 2016
We derive the luminosity function and redshift distribution of short Gamma Ray Bursts (SGRBs) using (i) all the available observer-frame constraints (i.e.
G. Ghirlanda   +22 more
semanticscholar   +1 more source

A nearby long gamma-ray burst from a merger of compact objects [PDF]

open access: yesNature, 2022
Gamma-ray bursts (GRBs) are flashes of high-energy radiation arising from energetic cosmic explosions. Bursts of long (greater than two seconds) duration are produced by the core-collapse of massive stars1, and those of short (less than two seconds ...
E. Troja   +23 more
semanticscholar   +1 more source

Search for Gravitational-wave Signals Associated with Gamma-Ray Bursts during the Second Observing Run of Advanced LIGO and Advanced Virgo

open access: yesThe Astrophysical Journal, 2019
We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August.
B. P. Abbott   +1197 more
doaj   +1 more source

Spectral Hardness and Evolution of Swift Gamma-Ray Bursts and X-Ray Afterglows

open access: yesThe 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

Ballerina - Pirouettes in Search of Gamma Bursts [PDF]

open access: yes, 1999
The cosmological origin of gamma ray bursts has now been established with reasonable certainty. Many more bursts will need to be studied to establish the typical distance scale, and to map out the large diversity in properties which have been indicated ...
Brandt, S.   +3 more
core   +2 more sources

The Physics of Gamma-Ray Bursts

open access: yes, 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]

open access: yesNature, 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

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