The properties of gamma-ray images of supernova remnants due to proton-proton interactions

Details The properties of gamma-ray images of supernova remnants due to proton-proton interactions The properties of gamma-ray images of supernova remnants due to proton-proton interactions

2011-09-10

arxiv.org/abs/1109.2245v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 1 figure, submitted to Proceedings of the 20th Annual Conference of Doctoral Students - WDS'2011

Scientific paper

MAGIC and H.E.S.S experiments are the first to produce images of supernova remnats (SNRs) in TeV gamma-rays. The gamma-radiation are produced either by electrons (due to inverse-Compton scatterings) or protons (due to pion decays). We present a method to synthesize gamma-ray images of Sedov SNRs due to hadronic emission. The model is developed in the frame of a classic approach to proton acceleration and hydrodynamics of the shocks in a uniform interstellar medium; it includes energy losses of relativistic protons due to pp interactions. 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.

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