Title:	HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from a Past Explosion
Authors:	Boxi, Sovan Gupta, Nayantara
Keywords:	High energy astrophysics Gamma-rays Supernova remnants
Issue Date:	15-Jan-2024
Publisher:	American Astronomical Society
Citation:	The Astrophysical Journal, 2024, Vol.961, p61
Abstract:	The very-high-energy γ-ray source HESS J1809-193 has been detected by the LHAASO and HAWC observatory beyond 100 TeV energy. It is an interesting candidate for exploring the underlying mechanisms of γ-ray production due to the presence of supernova remnants, pulsars, and molecular clouds close to it. We have considered the injection of the energetic cosmic rays from a past explosion, whose reminiscent may be SNR G011.0-00.0, which is located within the extended γ-ray source HESS J1809-193. We explain the multiwavelength data from the region of HESS J1809-193 with synchrotron, inverse Compton, and bremsstrahlung emission of cosmic-ray electrons and secondary γ-ray production in interactions of cosmic-ray protons with the cold protons in the localmolecular clouds within a time-dependent framework including the diffusion loss of cosmic rays. The observational data have been modeled with the secondary photons produced by the time-evolved cosmic-ray spectrum assuming the age of the explosion is 4500 yr.
Description:	Open Access
URI:	http://hdl.handle.net/2289/8261
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2024ApJ...961...61B/abstract https://arxiv.org/abs/2311.07481 https://doi.org/10.3847/1538-4357/ad0da9
Copyright:	2024, The Author(s)
Appears in Collections:	Research Papers (A&A)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.