Author(s): Aharonian F.A., Bazer-Bachi A.R., Boisson C., Borrel V., Brion E., Boutelier T., Chounet L.-M., Coignet G., Djannati-Atai A., Dubus G., Espigat P., Farnier C., Feinstein F., Fiasson A., Fontaine G., Gallant Y., Giebels B., Glicenstein J.F., Goret P., Jacholkowska Agnieszka, Khelifi B., Komin Nukri, Lamanna G., Lemière A., Lemoine-Goumard M., Martin J.M., Martineau-Huynh O., Marcowith A., Moulin Emmanuel, Vasileiadis G.
(Article) Published:
Astronomy & Astrophysics, vol. 469 p.L1-L4 (2007)
Links openAccess full text : 
Ref HAL: in2p3-00147240_v1
Ref Arxiv: 0704.0171
DOI: 10.1051/0004-6361:20077299
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
87 citations
Abstract:
The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) gamma-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. The H.E.S.S. telescope array has been used to search for very high-energy gamma-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for gamma-ray production via hadronic interactions. We announce the discovery of a new gamma-ray source, HESS J0632+058, located close to the rim of the Monoceros SNR. This source is unresolved by H.E.S.S. and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy gamma-ray source 3EG J0634+0521. No evidence for an associated molecular cloud was found in the CO data.
Comments: 5 pages, 4 figures, to appear in A&A