Results 21 to 30 of about 452 (208)
Supermassive Objects as Gamma-Ray Bursters [PDF]
The Astrophysical Journal, 1998 We propose that the gravitational collapse of supermassive objects ($ M\ga 10^4 M_\odot$), either as relativistic star clusters or as single supermassive stars (which may result from stellar mergers in dense star clusters), could be a cosmological source of $γ$-ray bursts. These events could provide the seeds of the supermassive black holes observed at
Fuller, George M, Shi, Xiangdong
openaire +4 more sources
Deep search for optical counterparts of gamma-ray bursters [PDF]
International Astronomical Union Colloquium, 1995 AbstractPreliminary results are presented of the first (searching) stage of our observational program of the search and study of weak blue star-like objects in the two small γ-ray burst boxes GB 790418 and GB 790613. The basic search purposes are (1) the selection of star-like objects weaker than 23m inside these boxes, (2) the selection of the bluest ...
V.V. Sokolov +3 more
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GRB Cosmology: Probing The Early Universe [PDF]
, 2007 Current observations are about to open up a direct observational window into the final frontier of cosmology: the crucial first billion years in cosmic history when the first stars and galaxies formed.
Bromm, V., Loeb, A.
core +1 more source
Gamma-ray burster counterparts - Infrared
The Astrophysical Journal, 1987 The discovery of an IR counterpart to a gamma-ray burster (GRB) would be a big step forward in understanding this enigmatic phenomenon. A program of searching for IR emission from the smallest GRB source regions has been initiated. Seven boxes have been searched with ground-based telescopes at a wavelength of 2.2 microns and 23 with the IRAS data base ...
Bradley E. Schaefer +13 more
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New Journal of Physics, 2014 Strong shear flow regions found in astrophysical jets are shown to be important dissipation regions, where the shear flow kinetic energy flow is converted into electric and magnetic field energy via shear instabilities.
E P Alves +3 more
doaj +1 more source
Radio Transients from Gamma-Ray Bursters [PDF]
The Astrophysical Journal, 1993 8 pages, plain TeX, submitted to Ap.J.Lett., POP ...
Paczynski, Bohdan, Rhoads, James E.
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Hyper-accreting tori of Gamma Ray Bursters [PDF]
AIP Conference Proceedings, 2008 We present numerical simulations of axisymmetric magnetised massive tori around rotating black holes taking into account the energy losses due to emission of neutrinos. A realistic equation of state is used which takes into account the energy losses due to dissociation of nuclei. The heating due to neutrino-antineutrino annihilation is not included. We
M. V. Barkov, Magnus Axelsson
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The Astrophysical JournalIn this study, we present the pulse profile of the unique and the second-brightest gamma-ray burst GRB 230307A, and analyze its temporal behavior using a joint GECAM–Fermi Gamma-ray Burst Monitor (GBM) time-resolved spectral analysis.
R. Moradi +8 more
doaj +1 more source
Epidermal Patch Technologies for Integrated Healthcare and Infection Management
Advanced Healthcare Materials, EarlyView.Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang +7 more
wiley +1 more source
Bridging the Gap: GRB 230812B—A 3 s Supernova-associated Burst Detected by the GRID Mission
The Astrophysical JournalGRB 230812B, detected by the Gamma-Ray Integrated Detectors constellation mission, is an exceptionally bright gamma-ray burst (GRB) with a duration of only 3 s.
Chen-Yu Wang +32 more
doaj +1 more source