HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from a Past Explosion
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 local molecular 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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 2024
- DOI:
- 10.3847/1538-4357/ad0da9
- arXiv:
- arXiv:2311.07481
- Bibcode:
- 2024ApJ...961...61B
- Keywords:
-
- High energy astrophysics;
- Gamma-rays;
- Supernova remnants;
- 739;
- 637;
- 1667;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 8 pages, 6 figures, Accepted in ApJ