gamma-rays : burstsX-rays : generalWe present an analysis of the X-ray absorption properties of 6 gamma-ray burst (GRB) afterglows measured with BeppoSAX. Between 8 hrs and 20 hrs after the initial GRB trigger, individual spectra can be described by a power-law with a photon index of ~...
Properties of Gamma Rays Gamma Radiation Equation Gamma Rays Uses Health Effects of Gamma Radiation Lesson Summary Frequently Asked Questions What are 3 uses for gamma rays? Gamma radiation from cosmic rays is detected, measured, and studied by astronomers. Gamma radiation within the medical sciences...
Our calculations show that these losses are important only for large densities of protons as it could be in case of interactions of the supernova shock with molecular cloud. Numerical simulations are used to synthesize radial profiles of hadronic TeV gamma-rays....
Key words: gamma-rays: bursts – X-rays: general 1. Introduction The BeppoSAX observation of gamma-ray burst (GRB) afterglows at X-ray wavelengths has ushered in a new era of gamma-ray burst studies. The breakthrough has been achieved using a conventional GRB detector in conjunc- ...
We argue that this result provides indirect evidence for jet propagation inside a massive star, and suggests the existence of recollimation shocks that take place close to this radius. 展开 关键词: gamma rays: stars hydrodynamics methods: data analysis radiation mechanisms: thermal radiative transfer...
The source of terrestrial gamma-ray flashes (TGFs) has been an active area of research since their discovery by Compton Gamma-Ray Observatory/Burst and Transient Source Experiment in 1994. These intense bursts of gamma rays originate within thunderclouds via the rapid production of relativistic run...
The relaxation lengths and the buildup factors for gamma‐rays were calculated. The results suggest that desert sand provides reasonable protection against gamma radiation.doi:10.1080/00207239808711171El‐EnanyN.Taylor & Francis GroupInternational Journal of Environmental Studies...
Gamma-ray spectroscopyThermoluminescenceTemperatureA fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-rays accurately in elevated temperature conditions. Throughout this study, ...
In this paper, a method is proposed to determine the basic properties of $\gamma$-ray loud blazars, among them the central black hole mass, M, the Doppler factor, $\delta$, the propagation angle of the $\gamma$-rays with respect to the symmetric axis of a two-temperature accretion disk...
Give any three properties of beta- rays. 03:15 Give any three properties of gamma- radiations. 01:50 Mention any three applications of radio isotopes. 03:37 Give an example for beta decay followed by gamma-decay (gamma decay). 01:21 Name the particle discovered in the process of beta^...