Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31208
Title: | Gamma-Ray Emission Revealed at the Western Edge of SNR G344.7-0.1 | Authors: | Eagle, J MARCHESI, STEFANO Castro, D Ajello, M Vendrasco, A |
Issue Date: | 2020 | Journal: | THE ASTROPHYSICAL JOURNAL | Number: | 904 | Issue: | 2 | First Page: | 123 | Abstract: | We report on the investigation of a very high energy (VHE), Galactic γ-ray source recently discovered at >50 GeV using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope (Fermi). This object, 2FHL J1703.4-4145, displays a very hard >50 GeV spectrum with a photon index Γγ ∼ 1.2 in the 2FHL catalog and, as such, is one of the most extreme sources in the 2FHL subsample of Galactic objects. A detailed analysis of the available multiwavelength data shows that this source is located on the western edge of the supernova remnant (SNR) G344.7-0.1, along with extended TeV source, HESS J1702-420. The observations and the spectral energy distribution modeling support a scenario where this γ-ray source is the byproduct of the interaction between the SNR shock and the dense surrounding medium, with escaping cosmic rays (CRs) diffusing into the dense environment and interacting with a large local cloud, generating the observed TeV emission. If confirmed, an interaction between the SNR CRs and a nearby cloud would make 2FHL J1703.4-4145 another promising candidate for efficient particle acceleration of the 2FHL Galactic sample, following the first candidate from our previous investigation of a likely shock-cloud interaction occurring on the western edge of the Vela SNR. | URI: | http://hdl.handle.net/20.500.12386/31208 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/abbe08 https://api.elsevier.com/content/abstract/scopus_id/85097501122 |
ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/abbe08 | Bibcode ADS: | 2020ApJ...904..123E | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2006.08757.pdf | postprint | 1.71 MB | Adobe PDF | View/Open |
Eagle_2020_ApJ_904_123.pdf | [Administrators only] | 893.15 kB | Adobe PDF |
Items in DSpace are published in Open Access, unless otherwise indicated.