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Title: Discovery of a point-like very-high-energy γ-ray source in Monoceros
Authors: Berge, D.
Hinton, J. A.
Reimer, O.
Rowell, G.
Tluczykont, M.
Aharonian, F. A.
Benbow, W.
Berge, D.
Bernlöhr, K.
Bolz, O.
Braun, I.
Hauser, D.
Hermann, G.
Hinton, J. A.
Hofmann, W.
Hoppe, S.
Beilicke, M.
Khélifi, B.
Kosack, K.
Masterson, C.
Panter, M.
Ward, M.
Rowell, G.
Brion, E.
Van Eldik C
Volk, H. J.
Akhperjanian, A. G.
Sahakian, V.
Cornils, R.
Bazer-Bachi, A. R.
Glicenstein, J. F.
Heinzelmann, G.
Büsching, I.
Raue, M.
Ripken, J.
Bernlöhr, K.
Coignet, G.
Funk, S.
Füßling, M.
Kerschhaggl, M.
Lohse, T.
Schlenker, S.
Schwanke, U.
Holleran, M.
Goret, P.
Boisson, C.
Moulin, E.
Rolland, L.
Lamanna, G.
Brown, A. M.
Chadwick, P. M.
Dickinson, H. J.
Pita, S.
Hadjichristidis, C.
De Jager OC
Latham, I. J.
Le Gallou R
McComb, T. J. L.
Nolan, S. J.
Noutsos, A.
Ranchon, S.
Orford, K. J.
Osborne, J. L.
Rayner, S. M.
Spangler, D.
Raubenheimer, B. C.
Punch, M.
Rosier-Lees, S.
Venter, C.
Chounet, L. -. M.
Degrange, B.
Dubus, G.
Marcowith, A.
Fontaine, G.
Terrier, R.
Giebels, B.
Khélifi, B.
Lemoine-Goumard, M.
Superina, G.
Vialle, J. P.
Tluczykont, M.
Aharonian, F. A.
Djannati-Ataï, A.
Moulin, E.
Espigat, P.
Lemière, A.
Maurin, G.
Schwarzburg, S.
Pita, S.
Punch, M.
Terrier, R.
Djannati-Ataï, A.
Espigat, P.
Lemière, A.
Vasileiadis, G.
O'C Drury L
Maurin, G.
Behera, B.
Emmanoulopoulos, D.
Martineau-Huynh, O.
Hauser, M.
Hinton, J. A.
Pedaletti, G.
Bühler, R.
Pühlhofer, G.
Glück, B.
Schwemmer, S.
Tam, P. H.
Wagner, S. J.
Farnier, C.
Feinstein, F.
Tavernet, J. -. P.
Fiasson, A.
Gallant, Y. A.
Jacholkowska, A.
Komin, N.
Stegmann, C.
Carrigan, S.
Vincent, P.
Boutelier, T.
Henri, G.
Pelletier, G.
Petrucci, P. -. O.
Borrel, V.
Saugé, L.
Costamante, L.
Hoffmann, A.
Horns, D.
Kendziorra, E.
De Naurois M
Nedbal, D.
Santangelo, A.
Domainko, W.
Rob, L.
Marcowith, A.
Ruppel, J.
Schlickeiser, R.
Schröder, R.
Martin, J. M.
Shalchi, A.
Steenkamp, R.
Costamante, L.
Masterson, C.
Tluczykont, M.
Moriguchi, Y.
Olive, J. -. P.
Egberts, K.
Fukui, Y.
Förster, A.
Funk, S.
Sol, H.
First Published: Jul-2007
Publisher: EDP Sciences for European Southern Observatory (ESO)
Citation: Astronomy & Astrophysics, 2007, 469 (1)
Abstract: Aims.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. Methods.The HESS 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. Results.We announce the discovery of a new $\gamma$-ray source, HESS J0632+057, located close to the rim of the Monoceros SNR. This source is unresolved by HESS 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.
DOI Link: 10.1051/0004-6361:20077299
ISSN: 0004-6361
eISSN: 1432-0746
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2007 ESO. Reproduced with permission from Astronomy & Astrophysics, © ESO.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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