منابع مشابه
Nonthermal radiation mechanisms
In this paper we review the possible radiation mechanisms for the observed non-thermal emission in clusters of galaxies, with a primary focus on the radio and hard X-ray emission. We show that the difficulty with the non-thermal, non-relativisitic Bremsstrahlung model for the hard X-ray emission, first pointed out by Petrosian (2001) using a cold target approximation, is somewhat alleviated whe...
متن کاملNonthermal axion dark radiation and constraints
Anupam Mazumdar, Saleh Qutub, and Ken’ichi Saikawa Consortium for Fundamental Physics, Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom Kapteyn Astronomical Institute, University of Groningen, 9700 AV Groningen, Netherlands Department of Astronomy, King Abdulaziz University, Jeddah 21589, Saudi Arabia Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hambu...
متن کاملNonthermal Radiation of the Crab Nebula
The radiation mechanisms contributing to formation of the nonthermal spectrum of the Crab Nebula, as well as the information that could be derived from future observations in different energy bands, are discussed.
متن کاملNonthermal Radiation Processes in X-ray Jets
Analytic approximations for synchrotron, synchrotron self-Compton (SSC), and external Compton (EC) processes are used to constrain model parameters for knot and hot-spot emission in extended jets of radio galaxies. Equipartition formulas are derived that relate the Doppler factor δ and comoving magnetic field B assuming a nonthermal synchrotron origin of the radio emission, and synchrotron, SSC...
متن کاملThe Mechanisms of Radiation-Induced Bystander Effect
The radiation-induced bystander effect is the phenomenon which non-irradiated cells exhibit effects along with their different levels as a result of signals received from nearby irradiated cells. Responses of non-irradiated cells may include changes in process of translation, gene expression, cell proliferation, apoptosis and cells death. These changes are confirmed by results of some In-Vivo s...
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: Space Science Reviews
سال: 2008
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-008-9327-2