The interstellar medium towards three Supernova Remnants

E. GIACANI; A. PETRIELLA

Chania

Congreso; Supernova Remnants: An Odyssey in Space after Stellar Death; 2016

In the last years, with the increasing number of discovered gamma-ray sources, important efforts have been dedicated to establish the originof this high-energy emission using observations in other spectral bands. Supernova remnants (SNRs) have been proposed as possible generators of gamma-rays in our Galaxy, among other astrophysical sources. SNR's shocks are expected to be sites of cosmic ray acceleration and clouds of dense material can provide an effective target for proton-proton collisions and subsequent production of gamma-rays. We present a preliminary study of the molecular and atomic material towards G40.5-0.5 and G45.7-0.4 (two SNRs located in the vicinity ofhigh-energy sources) and the TeV SNR candidate G44.5-0.2, toestablish the origin of the gamma-ray emission. In addition, the studyof the interstellar medium also provides important clues on how SNRsinteract with and modify their local environment.