Results 21 to 30 of about 2,162,814 (284)

Superlong gamma-ray bursts [PDF]

Astronomy 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 ...
Tikhomirova, Ya., Stern, B. E.
openaire   +2 more sources

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

The 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, M. S. Briggs, A. Goldstein, C. A. Meegan, W. S. Paciesas, R. D. Preece, C. A. Wilson-Hodge, M. H. Gibby, J. Greiner, D. Gruber, P. Jenke, R. M. Kippen, V. Pelassa, S. Xiong, H.-F. Yu, P. N. Bhat, J. M. Burgess, D. Byrne, G. Fitzpatrick, S. Foley, M. M. Giles, S. Guiriec, A. J. van der Horst, A. von Kienlin, S. McBreen, S. McGlynn, D. Tierney, B.-B. Zhang   +27 more
openaire   +5 more sources

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

The 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

Gamma-ray bursts [PDF]

Reports 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   +4 more sources

The Swift satellite and redshifts of long gamma-ray bursts [PDF]

, 2006
Until 6 October 2005 sixteen redshifts had been measured of long gamma-ray bursts discovered by the Swift satellite. Further 45 redshifts have been measured of the long gamma- ray bursts discovered by other satellites.
Larsson S, Ryde, Felix, Klose S, Ryde, F, Mészáros P, Mészáros, P, Tusnády, G, Mészáros, A., S. Larsson, Ryde F, Tusnady, G., Bagoly, Z., Klose, S., Balázs, L G, Bagoly Z, Z. Bagoly, Mészáros, Péter, Larsson, Stefan,, Larsson, S, Mészáros, Attila, A. Mészáros, Bagoly, Zsolt, P. Mészáros, I. Horváth, Horvath, I., Balázs L G, Meszaros, P., G. Tusnády, L. G. Balázs, Horváth I, Tusnády, Gábor, Tusnády G, Ryde, Felix,, Mészáros A, S. Klose, Horváth, I, Balázs, Lajos György, Mészáros, A, Balazs, L. G., Larsson, S., Bagoly, Z, Klose, S, F. Ryde, Ryde, F., Horváth, István   +44 more
core   +1 more source

Redshift distribution of gamma-ray bursts and star formation rate [PDF]

, 2006
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing
Bagoly, Zsolt, I. Horváth, Mészáros, A., Horvath, I., Balázs L G, Balázs, L., Bagoly, Z., L. G. Balázs, Horváth I, Balázs, L. G., Balázs, L G, Bagoly Z, Z. Bagoly, Mészáros A, Horváth, I, Balázs, Lajos György, Mészáros, A, Bagoly, Z, Horváth, István, A. Mészáros   +19 more
core   +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

Геодинамика 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, N. V. Tyurina, V. G. Kornilov, E. S. Gorbovskoy, V. V. Vladimirov, A. S. Kuznetzov, P. V. Balanutsa, D. S. Zimnukhov, V. V. Chazov, D. M. Vlasenko, A. G. Tlatov, V. A. Senik, O. A. Ershova, O. A. Gress, N. M. Budnev, S. A. Yazev, O. B. Chvalaev, V. A. Poleshchuk, Yu. V. Ishmuhametova, V. V. Yurkov, A. V. Gabovich, Yu. P. Sergienko, R. Podesta, C. Lopez, F. Podesta, H. Levato, R. R. Lopez, M. Serra-Ricart, N. Lodieu, G. Israelian, L. Suarez-Andrez, D. Buckley   +31 more
doaj   +1 more source

Black Hole Accretion in Gamma Ray Bursts

Galaxies, 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, Michal Bejger, Petra Sukova, Szymon Charzynski   +3 more
doaj   +1 more source

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

The 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

Dark gamma-ray bursts [PDF]

Physical Review D, 2017
Many theories of dark matter (DM) predict that DM particles can be captured by stars via scattering on ordinary matter. They subsequently condense into a DM core close to the center of the star and eventually annihilate. In this work, we trace DM capture and annihilation rates throughout the life of a massive star and show that this evolution ...
Brdar, Vedran, Kopp, Joachim, Liu, Jia
openaire   +2 more sources