Categories Gamma Ray Direct The Origin of Gamma-ray Emission from Circinus Galaxy

The Origin of Gamma-ray Emission from Circinus Galaxy

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  • uploaded June 25, 2021

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'The Circinus galaxy is a nearby composite starburst/active galactic nucleus (AGN) system. In this work we re-analyze the GeV emission from Circinus with 10 years of Fermi-LAT data. Our 0.1–500 GeV flux is several times lower than that reported in previous literature, which is roughly in compliance with the empirical relation for star-forming and Local Group galaxies and might be reproduced by the interaction between cosmic rays and the interstellar medium. The ratio between the γ-ray luminosity and the total infrared luminosity is near the proton calorimetric limit, indicating that Circinus may be a proton calorimeter.'

Authors: Xiao-Lei Guo | Yu-Liang Xin | Neng-Hui Liao | Yi-Zhong Fan
Indico-ID: 735
Proceeding URL: https://pos.sissa.it/395/628

Tags:
Categories: Gamma Ray Direct, Scientific Contributions
Presenter: Xiao-Lei Guo

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