Results 101 to 110 of about 255,861 (341)
Spectra of a recent bright burst measured by CGRO-COMPTEL: GRB 990123 [PDF]
, 2000 CGRO-COMPTEL measures gamma-ray burst positions, time-histories and spectra in the 0.1–30 MeV energy range, in both imaging “telescope” and single detector “burst spectroscopy” mode.
Bennett, K +13 more
core +3 more sources
Simultaneous X-Ray, Gamma-Ray, and Radio Observations of the Repeating Fast Radio Burst FRB 121102 [PDF]
, 2017 We undertook coordinated campaigns with the Green Bank, Effelsberg, and Arecibo radio telescopes during Chandra X-ray Observatory and XMM-Newton observations of the repeating fast radio burst FRB 121102 to search for simultaneous radio and X-ray bursts ...
P. Scholz +25 more
semanticscholar +1 more source
Supernovae and Gamma-Ray Bursts [PDF]
Chinese Journal of Astronomy and Astrophysics, 2006 I review the observational status of the Supernova/Gamma-Ray Burst (GRB) connection. Available data suggest that Supernovae (SNe) associated with GRBs form an heterogeneous class of objects including bright and faint hypernovae (Hyp) and perhaps also `standard' Ib/c events.
openaire +3 more sources
Cosmology with gamma-ray bursts
Astronomical and Astrophysical Transactions, 2022 Gamma-ray bursts constitute one of the most fascinating and relevant phenomena in modern science, with strong implications for several fields of astrophysics, cosmology and fundamental physics. In this short review, I focus on the prospective key-role of GRBs for cosmology. Indeed, the huge luminosity, the redshift distribution extending at least up
openaire +2 more sources
Reclassification of gamma-ray bursts [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We have applied two different automatic classifier algorithms to the BATSE Current GRB Catalog data and we obtain three different classes of GRBs. Our results confirm the existence of a third, intermediate class of GRBs, with mean duration \sim 25-50 s, as deduced from a cluster analysis and from a neural network algorithm.
Ramon Canal +3 more
openaire +4 more sources
Gamma-ray Bursts: 50 Years and Counting!
UniverseGamma-ray bursts were discovered by the Vela satellites in the late 1960s, but they were announced for the first time exactly 50 years ago, in 1973. The history of our understanding of gamma-ray bursts can be subdivided into several eras.
Alessandro Armando Vigliano +1 more
doaj +1 more source
Gamma-Ray Bursts Observed with the Spectrometer SPI Onboard INTEGRAL
, 2004 The spectrometer SPI is one of the main detectors of ESA's INTEGRAL mission. The instrument offers two interesting and valuable capabilities for the detection of the prompt emission of Gamma-ray bursts.
Beckmann, V. +3 more
core +2 more sources
BATSE observations of gamma-ray burst spectra. I: Spectral diversity
, 1993 We studied the time-averaged gamma-ray burst spectra accumulated by the spectroscopy detectors of the Burst and Transient Source Experiment. The spectra are described well at low energy by a power-law continuum with an exponential cutoff and by a steeper
J. Matteson +13 more
semanticscholar +1 more source
Luminosity function and jet structure of Gamma-Ray Burst [PDF]
, 2014 The structure of Gamma Ray Burst (GRB) jets impacts on their prompt and afterglow emission properties. The jet of GRBs could be uniform, with constant energy per unit solid angle within the jet aperture, or it could instead be structured, namely with ...
A. Pescalli +7 more
semanticscholar +1 more source
Gamma-ray Bursts and Afterglow [PDF]
Symposium - International Astronomical Union, 2000 The origin of GRBs has been a mystery for almost 30 years. Their sources emit a huge amount of energy on short time scales, and the process involves extreme relativistic motion with a bulk Lorentz factor of at least a few hundred. In the last two years, “afterglow” emission in X-ray, optical, IR, and radio was detected. The afterglow can be measured up
openaire +5 more sources