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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:52 |
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Conference: Bucharest University Faculty of Physics 2015 Meeting
Section: Nuclear and Elementary Particles Physics I
Title:
Inverse Compton scattering
Authors:
Anamaria SPATARU, I. LAZANU
Affiliation:
University of Bucharest
Faculty of Physics, POBox MG-11, Magurele-Bucharest
E-mail
spataruana09@yahoo.com
Keywords:
astrophysical and cosmological applications, astroparticle acceleration, inverse Compton scattering, Sunyaev - Zeldovich Effect
Abstract:
In astrophysical and cosmological applications the mechanisms by which particles attaint very high energies is yet an open problem. In this contribution the possible mechanisms of acceleration particles like Fermi mechanism of first and second order, Pulsars, matter-antimatter annihilation are shortly discussed. Inverse Compton scattering will be treated more in detail because in this direction it plays a more important role than the Compton scattering itself.
Because we are talking about astrophysical processes, this scattering can be generalized as a scattering between a distribution of electrons and a distribution of photons. The change in the spectrum of the incident radiation caused by the multiple Compton scattering with a thermal distribution of electrons is discussed and some numerical estimations are done.
The Sunyaev - Zeldovich Effect (CMB Comptonization) in which the change of energy is made by the scattering of the cosmic microwave background radiation photons by the electrons in the clusters of galaxies and the applications of these effect are also brief discussed.
References:
Sampoorna.M.,Compton scattering in astrophysics, Indian Institute of Science, 2003
M.Longair, High energy Astrophysics, Cambridge University Press, 1992
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