Author(s): Aharonian F., Boisson C., Brion E., Boutelier T., Chounet L.-M., Coignet G., Degrange B., Djannati-Ataï A., Dubois F., Dubus G., Espigat P., Farnier C., Feinstein F., Fiasson A., Fontaine G., Gallant Y., Giebels B., Glicenstein J.F., Goret P., Henri G., Jacholkowska Agnieszka, Khélifi B., Komin Nukri, Lamanna G., Lemoine-Goumard M., Lenain J.-P., Martin J.M., Martineau-Huynh O., Marcowith A., Vasileiadis G.
(Article) Published:
Astronomy & Astrophysics, vol. 483 p.509-517 (2008)
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DOI: 10.1051/0004-6361:20079230
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Abstract:
HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously been found in longer-wavelength data, the processes that power the VHE emission are not well understood. Combining the latest VHE data with recent XMM-Newton observations and a variety of source catalogs and lower-energy survey data, we attempt to match (from an energetic and positional standpoint) the various parts of the emission of HESS J1745-303 with possible candidates. Though no single counterpart is found to fully explain the VHE emission, we postulate that at least a fraction of the VHE source may be explained by a supernova-remnant/molecular-cloud association and/or a high-spin-down-flux pulsar.
Comments: 11 pages, 4 figures, Accepted for publication in Astronomy & Astrophysics