منابع مشابه
X - and Gamma - Ray Line Emission Processes
This chapter is intended to provide a general presentation of the atomic and nuclear processes responsible for X-ray line and gamma-ray line emission in various astrophysical environments. I consider line production from hot plasmas, from accelerated particle interactions , from the decay of radioactive nuclei synthesized in stars and from positron annihilation. Spectroscopic properties of thes...
متن کاملX-Ray Emission of Gamma-Ray Bursts
X-ray emission can provide a crucial diagnostic of gamma-ray bursts (GRBs). We calculate the X-ray and gamma-ray spectra of impulsive acceleration episodes related to GRB pulses. We use the synchrotron shock model (SSM) as a basis of our calculations. We show that the current data on soft-to-hard emission ratios of GRB pulse emission are in agreement with the SSM. In particular, GRB pulse emiss...
متن کاملX–ray Emission in Gamma-ray Blazars
As shown by Maraschi (this volume) the overall spectral energy distribution (SED) of the blazars detected by EGRET shows two peaks, in a ν–νF (ν) plot. With few exceptions, the minimum between these two peaks occurs in the X–ray range. We can exploit this observational fact to constrain the models proposed to account for the SED of blazars, and to reach an important conclusion: the conversion o...
متن کاملGamma-Ray Emission from X-Ray Binaries
We summarize the current observational picture regarding high-energy emission from Galactic X-ray binaries, reviewing the results of the Compton Gamma Ray Observatory mission. We speculate on the prospects for the GLAST era.
متن کاملEmission Processes in Gamma–ray Bursts
Recent results of the hectic research activity about gamma–ray bursts will be reviewed, with emphasis about the emission processes at the origin of the observed γ–rays. The conventional synchrotron shock scenario is found to have problems, due to the very short cooling times of the emitting electrons, which implies a predicted spectrum, Fν ∝ ν −1/2, much steeper than what is observed. It is the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EAS Publications Series
سال: 2003
ISSN: 1633-4760,1638-1963
DOI: 10.1051/eas:2003038