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Gamma-Ray Burst Progenitors [PDF]

open access: yesSpace Science Reviews, 2016
We review our current understanding of the progenitors of both long and short duration gamma-ray bursts (GRBs). Constraints can be derived from multiple directions, and we use three distinct strands; i) direct observations of GRBs and their host galaxies, ii) parameters derived from modeling, both via population synthesis and direct numerical ...
Norbert Langer   +7 more
openaire   +6 more sources

GECAM Localization of High-energy Transients and the Systematic Error

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a pair of microsatellites (i.e., GECAM-A and GECAM-B) dedicated to monitoring gamma-ray transients including the high-energy electromagnetic counterparts of ...
Yi Zhao   +65 more
doaj   +1 more source

Gamma-ray bursts [PDF]

open access: yesReports on Progress in Physics, 2006
Gamma-ray bursts are the most luminous explosions in the Universe, and their origin and mechanism are the focus of intense research and debate. More than three decades after their discovery, and after pioneering breakthroughs from space and ground experiments, their study is entering a new phase with the recently launched Swift satellite. The interplay
openaire   +7 more sources

Very-high-energy Gamma-Ray Afterglows of GRB 201015A and GRB 201216C

open access: yesThe Astrophysical Journal, 2023
Gamma-ray bursts (GRBs) 201015A and 201216C are valuable cases where very-high-energy (VHE) gamma-ray afterglows have been detected. By analyzing their prompt emission data, we find that GRB 201216C is an extremely energetic, long GRB with a hard gamma ...
Lu-Lu Zhang   +3 more
doaj   +1 more source

Millisecond Magnetar Birth Connects FRB 121102 to Superluminous Supernovae and Long-duration Gamma-Ray Bursts [PDF]

open access: yes, 2017
Subarcsecond localization of the repeating fast radio burst FRB 121102 revealed its coincidence with a dwarf host galaxy and a steady (“quiescent”) nonthermal radio source.
B. Metzger, E. Berger, B. Margalit
semanticscholar   +1 more source

The afterglows of gamma-ray bursts [PDF]

open access: yesAIP Conference Proceedings, 2000
Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated electromagnetic energy release of 10**51 -- 10**53 erg, making these the brightest explosions in the Universe.
Kulkarni, S. R.   +11 more
openaire   +10 more sources

A Broken “α–intensity” Relation Caused by the Evolving Photosphere Emission and the Nature of the Extraordinarily Bright GRB 230307A

open access: yesThe Astrophysical Journal Letters, 2023
GRB 230307A is one of the brightest gamma-ray bursts detected so far. With the excellent observation of GRB 230307A by the Fermi Gamma-ray Burst Monitor, we can reveal the details of prompt emission evolution.
Yun Wang   +4 more
doaj   +1 more source

Revisiting the Spectral Energy Correlations of GRBs with Fermi Data. I. Model-wise Properties

open access: yesThe Astrophysical Journal Supplement Series, 2023
Gamma-ray bursts (GRBs) exhibit a diversity of spectra. Several spectral models (e.g., Band, cutoff power law (CPL), and blackbody) and their hybrid versions (e.g., Band+blackbody) have been widely used to fit the observed GRB spectra.
Liang Li
doaj   +1 more source

Short-Duration Gamma-Ray Bursts [PDF]

open access: yes, 2013
Gamma-ray bursts (GRBs) display a bimodal duration distribution with a separation between the short- and long-duration bursts at about 2 s. The progenitors of long GRBs have been identified as massive stars based on their association with Type Ic core ...
E. Berger
semanticscholar   +1 more source

Gamma-Ray Bursts

open access: yes, 2022
Gamma-ray bursts (GRB) are short and intense bursts of $\sim$100 keV$-$1MeV photons, usually followed by long-lasting decaying afterglow emission in a wide range of electromagnetic wavelengths from radio to X-ray and, sometimes, even to GeV gamma-rays.
Yu, Yun-Wei   +3 more
openaire   +2 more sources

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