Results 31 to 40 of about 211,583 (346)

Superlong gamma-ray bursts [PDF]

open access: yesAstronomy Letters, 2005
Before the BATSE/GRO launch GRBs seem to be a uniform phenomenon with duration up to about 100 seconds. The BATSE has detected many events longer than 100 s and a few longer than 500s. We performed the off-line scan of the 1024 ms continuous BATSE records and revealed several non-triggered episodes of the BATSE GRB triggers which confidently belong to ...
Ya. Yu. Tikhomirova, Boris E. Stern
openaire   +3 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

Repeating Emission Episodes in Gamma-Ray Bursts: Millilensing or Jet Precession?

open access: yesThe Astrophysical Journal, 2023
Recently, some gamma-ray bursts (GRBs) whose light curves consist of repeating emission episodes with similar temporal profiles have attracted extensive attention.
He Gao   +3 more
doaj   +1 more source

THE COSMIC GAMMA-RAY BURSTS [PDF]

open access: yesThe Ninth Marcel Grossmann Meeting, 2002
Cosmic gamma-ray bursts are one of the great frontiers of astrophysics today. They are a playground of relativists and observers alike. They may teach us about the death of stars and the birth of black holes, the physics in extreme conditions, and help us probe star formation in the distant and obscured universe. In this review we summarise some of the
S. G. Djorgovski   +14 more
openaire   +4 more sources

Gamma-ray Bursts [PDF]

open access: yesInternational Astronomical Union Colloquium, 2005
SummarySince their discovery in 1967 Gamma-ray bursts (GRBs) have been puzzling to astrophysicists. With the advent of a new generation of X–ray satellites in the late 90’s, it was possible to carry out deep multi-wavelength observations of the counterparts associated with the long duration GRBs class just within a few hours of occurrence, thanks to ...
openaire   +4 more sources

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

SHORT GAMMA-RAY BURSTS FROM THE MERGER OF TWO BLACK HOLES [PDF]

open access: yes, 2016
Short gamma-ray bursts (GRBs) are explosions of cosmic origins believed to be associated with the merger of two compact objects, either two neutron stars or a neutron star and a black hole (BH).
R. Perna, D. Lazzati, B. Giacomazzo
semanticscholar   +1 more source

The Diversity of Kilonova Emission in Short Gamma-Ray Bursts [PDF]

open access: yesAstrophysical Journal, 2017
The historic first joint detection of both gravitational-wave and electromagnetic emission from a binary neutron star merger cemented the association between short gamma-ray bursts (SGRBs) and compact object mergers, as well as providing a well-sampled ...
B. Gompertz   +12 more
semanticscholar   +1 more source

Early optical observations of seven gamma-ray bursts in comparison to their gamma X-ray characteristics in the MSU MASTER Global Robotic Telescopes Net

open access: yesГеодинамика и тектонофизика, 2019
Seven gamma-ray bursts – GRB 130907A, GRB 140311B, GRB 140129B, GRB 160227A, GRB 120404A, GRB 110801A, and GRB 120811C were observed by the MSU MASTER (Mobile Astronomical System of TElescope Robots) Global Network.
V. M. Lipunov   +31 more
doaj   +1 more source

MERGERS OF CHARGED BLACK HOLES: GRAVITATIONAL-WAVE EVENTS, SHORT GAMMA-RAY BURSTS, AND FAST RADIO BURSTS [PDF]

open access: yes, 2016
The discoveries of GW150914, GW151226, and LVT151012 suggest that double black hole (BH–BH) mergers are common in the universe. If at least one of the two merging black holes (BHs) carries a certain amount of charge, possibly retained by a rotating ...
Bing Zhang
semanticscholar   +1 more source

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