2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant
We report on the investigation of a very high-energy, Galactic γ-ray source recently discovered at >50 GeV using the Large Area Telescope on board Fermi. This object, 2FHL J0826.1-4500, displays one of the hardest >50 GeV spectra (photon index Γγ ∼ 1.6) in the 2FHL catalog, and a follo...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004637X_v870_n1_p_Eagle |
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todo:paper_0004637X_v870_n1_p_Eagle2023-10-03T14:02:45Z 2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant Eagle, J. Marchesi, S. Castro, D. Ajello, M. Duvidovich, L. Tibaldo, L. cosmic rays ISM: supernova remnants radiation mechanisms: thermal shock waves We report on the investigation of a very high-energy, Galactic γ-ray source recently discovered at >50 GeV using the Large Area Telescope on board Fermi. This object, 2FHL J0826.1-4500, displays one of the hardest >50 GeV spectra (photon index Γγ ∼ 1.6) in the 2FHL catalog, and a follow-up observation with XMM-Newton has uncovered diffuse, soft thermal emission at the position of the γ-ray source. A detailed analysis of the available multi-wavelength data shows that this source is located on the western edge of the Vela supernova remnant (SNR): the observations and the modeling of the spectral energy distribution support a scenario where this γ-ray source is the byproduct of the interaction between the SNR shock and a neutral hydrogen cloud. If confirmed, this shock-cloud interaction would make 2FHL J0826.1-4500 a promising candidate for efficient particle acceleration. © 2019. The American Astronomical Society. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v870_n1_p_Eagle |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
cosmic rays ISM: supernova remnants radiation mechanisms: thermal shock waves |
| spellingShingle |
cosmic rays ISM: supernova remnants radiation mechanisms: thermal shock waves Eagle, J. Marchesi, S. Castro, D. Ajello, M. Duvidovich, L. Tibaldo, L. 2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| topic_facet |
cosmic rays ISM: supernova remnants radiation mechanisms: thermal shock waves |
| description |
We report on the investigation of a very high-energy, Galactic γ-ray source recently discovered at >50 GeV using the Large Area Telescope on board Fermi. This object, 2FHL J0826.1-4500, displays one of the hardest >50 GeV spectra (photon index Γγ ∼ 1.6) in the 2FHL catalog, and a follow-up observation with XMM-Newton has uncovered diffuse, soft thermal emission at the position of the γ-ray source. A detailed analysis of the available multi-wavelength data shows that this source is located on the western edge of the Vela supernova remnant (SNR): the observations and the modeling of the spectral energy distribution support a scenario where this γ-ray source is the byproduct of the interaction between the SNR shock and a neutral hydrogen cloud. If confirmed, this shock-cloud interaction would make 2FHL J0826.1-4500 a promising candidate for efficient particle acceleration. © 2019. The American Astronomical Society. All rights reserved. |
| format |
JOUR |
| author |
Eagle, J. Marchesi, S. Castro, D. Ajello, M. Duvidovich, L. Tibaldo, L. |
| author_facet |
Eagle, J. Marchesi, S. Castro, D. Ajello, M. Duvidovich, L. Tibaldo, L. |
| author_sort |
Eagle, J. |
| title |
2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| title_short |
2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| title_full |
2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| title_fullStr |
2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| title_full_unstemmed |
2FHL J0826.1-4500: Discovery of a Possible Shock-Cloud Interaction on the Western Edge of the Vela Supernova Remnant |
| title_sort |
2fhl j0826.1-4500: discovery of a possible shock-cloud interaction on the western edge of the vela supernova remnant |
| url |
http://hdl.handle.net/20.500.12110/paper_0004637X_v870_n1_p_Eagle |
| work_keys_str_mv |
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