Results 31 to 40 of about 72,034 (329)

Gamma-ray burst cosmology [PDF]

open access: yesNew Astronomy Reviews, 2015
21 pages, 24 figures, Accepted for publication by New Astronomy ...
Wang, F. Y., Dai, Z. G., Liang, E. W.
openaire   +2 more sources

Black Hole Accretion in Gamma Ray Bursts

open access: yesGalaxies, 2017
We study the structure and evolution of the hyperaccreting disks and outflows in the gamma ray bursts central engines. The torus around a stellar mass black hole is composed of free nucleons, Helium, electron-positron pairs, and is cooled by neutrino ...
Agnieszka Janiuk   +3 more
doaj   +1 more source

GRB 221009A with an Unconventional Precursor: A Typical Two-stage Collapsar Scenario?

open access: yesThe Astrophysical Journal, 2023
As the brightest gamma-ray burst (GRB) ever detected, GRB 221009A may offer a chance that reveals some interesting features that are hidden in those bursts that are not so bright.
Xin-Ying Song, Shuang-Nan Zhang
doaj   +1 more source

No Evidence for Gamma-Ray Burst/Abell Cluster or Gamma- Ray Burst/Radio-Quiet Quasar Correlations [PDF]

open access: yes, 1998
We examine the recent claims that cosmic gamma-ray bursts are associated with either radio-quiet quasars or Abell clusters. These associations were based on positional coincidences between cataloged quasars or Abell clusters, and selected events from the
C. Kouveliotou   +8 more
core   +2 more sources

LOCALIZATION OF GAMMA-RAY BURSTS USING THE FERMI GAMMA-RAY BURST MONITOR [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2015
The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 Gamma-Ray Bursts (GRBs) since it began science operations in July, 2008. We use a subset of over 300 GRBs localized by instruments such as Swift, the Fermi Large Area Telescope, INTEGRAL, and MAXI, or through triangulations from the InterPlanetary Network (IPN), to analyze the accuracy of ...
V. Connaughton   +27 more
openaire   +5 more sources

Long gamma-ray bursts and core-collapse supernovae have different environments [PDF]

open access: yes, 2006
When massive stars exhaust their fuel they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even more brilliant relativistic explosion known as a long ...
A Heger   +80 more
core   +3 more sources

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

Afterglow Polarization from Off-axis Gamma-Ray Burst Jets

open access: yesThe Astrophysical Journal, 2023
As we further our studies on gamma-ray bursts (GRBs), via both theoretical models and observational tools, more and more options begin to open for exploration of its physical properties.
A. C. Caligula do E. S. Pedreira   +7 more
doaj   +1 more source

The First JWST Spectrum of a GRB Afterglow: No Bright Supernova in Observations of the Brightest GRB of all Time, GRB 221009A

open access: yesThe Astrophysical Journal Letters, 2023
We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the afterglow of GRB 221009A, the brightest gamma-ray burst (GRB) ever observed.
A. J. Levan   +59 more
doaj   +1 more source

Detection Techniques of Microsecond Gamma-Ray Bursts using Ground-Based Telescopes [PDF]

open access: yes, 1999
Gamma-ray observations above 200 MeV are conventionally made by satellite-based detectors. The EGRET detector on the Compton Gamma Ray Observatory (CGRO) has provided good sensitivity for the detection of bursts lasting for more than 200 ms.
Aharonian F. A.   +9 more
core   +2 more sources

Home - About - Disclaimer - Privacy