Related to Gamma-ray:gamma emission gamma ray n. 1.A photon of electromagnetic radiation of very short wavelength, less than about 0.01 nanometer, and very high energy, greater than about 100,000 electron volts. Gamma rays are emitted in the decay of certain radioactive nuclei and in electron...
We present multi-band optical and near-infrared observations of 19 short γ-ray burst (GRB) host galaxies, aimed at measuring their stellar masses and population ages. The goals of this study are to evaluate whether short GRBs track the stellar mass distribution of galaxies, to investigate the...
By self-consistently considering the jet generation and propagation in the envelope of these low-mass Pop III stars, we find that a Pop III blue supergiant star has the possibility of giving rise to a gamma-ray burst (GRB) even though it keeps a massive hydrogen envelope. We evaluate ...
A planet having protective ozone within the collimated beam of a Gamma Ray Burst (GRB) may suffer ozone depletion, potentially causing a mass extinction event to existing life on a planet's surface and oceans. We model the dangers of long GRBs to planets in the Milky Way and utilize a ...
Share and Cite MDPI and ACS Style La Mura, G.; Barres de Almeida, U.; Conceição, R.; De Angelis, A.; Longo, F.; Pimenta, M.; Tomé, B.; Miceli, D. Probing Gamma-Ray Burst VHE Emission with the Southern Wide-Field-of-View Gamma-Ray Observatory. Galaxies 2021, 9, 98. ...
The hits and charge deposits from the secondary leptons are extracted to reconstruct the arrival direction and energy of the primary gamma-ray. The effective area of such space detectors, of the order of a square meter, is a limiting factor beyond a few hundreds of GeV. The non-thermal ...
Gamma ray is a high energy electromagnetic radiation with no charge and no rest mass. Gamma rays emitted from nucleus of an excited atom during nuclear decay process (the decay from high energy states of atomic nuclei to a lower state (Tsoulfanidis and Landsberger, 2015). They frequently acc...
The Compton electrons and scattered γ-rays have angles and energies which can be calculated from the relationships between the conservation of energy and momentum, correcting for the relativistic mass of the electrons at these kinetic energies. The scattered γ-ray may still have sufficient energy ...
Analysis of gamma-ray energies for 56 excited superdeformed rotational bands of nuclei of lanthanons La to Dy and of Hg, Tl, and Pb on the basis of the two... Analysis of the gamma-ray energies of 28 excited superdeformed bands of lanthanon nuclei by application of the two-revolving-...
high energy. The photons are counter-propagating in the intense field which provides a large cross-section for Breit-Wheeler process. A large number ofe+e−pair are created with the density as high as several critical densities and the total positron charge is of the order of nano-Coulomb....