Discovery of a point-like very-high-energy γ-ray source in Monoceros

被引：101

作者：

Aharonian, F. A.

Akhperjanian, A. G.

Bazer-Bachi, A. R.

Behera, B.

Beilicke, M.

Benbow, W.

Berge, D.

Bernloehr, K.

Boisson, C.

Bolz, O.

Borrel, V.

Braun, I.

Brion, E.

Brown, A. M.

Buehler, R.

Buesching, I.

Boutelier, T.

Carrigan, S.

Chadwick, P. M.

Chounet, L.-M.

Coignet, G.

Cornils, R.

Costamante, L.

Degrange, B.

Dickinson, H. J.

Djannati-Atai, A.

Domainko, W.

Drury, L. O'C.

Dubus, G.

Egberts, K.

Emmanoulopoulos, D.

Espigat, P.

Farnier, C.

Feinstein, F.

Fiasson, A.

Foerster, A.

Fontaine, G.

Funk, Seb.

Funk, S.

Fuessling, M.

Gallant, Y. A.

Giebels, B.

Glicenstein, J. F.

Glueck, B.

Goret, P.

Hadjichristidis, C.

Hauser, D.

Hauser, M.

Heinzelmann, G.

Henri, G.

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Yerevan Phys Inst, Yerevan 375036, Armenia

[3] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France

[4] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] Observ Paris, CNRS, UMR 8102, LUTH,Sect Meudon, F-92195 Meudon, France

[7] CEA, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

[8] Univ Durham, Dept Phys, Durham DH1 3LE, England

[9] NW Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa

[10] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[11] CNRS, IN2P3, Lab Annecy Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[12] APC, F-75231 Paris 05, France

[13] Univ Paris 07, CNRS, UMR 7164, CEA,Observ Paris, F-75221 Paris 05, France

[14] Dublin Inst Adv Studies, Dublin 2, Ireland

[15] Heidelberg Univ, D-69117 Heidelberg, Germany

[16] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, F-34095 Montpellier 5, France

[17] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[18] Univ Grenoble 1, CNRS, INSU, Lab Astrophys Grenoble, F-38041 Grenoble 9, France

[19] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[20] Univ Paris 06, CNRS, IN2P3, Lab Phys Nucl & Hautes Energies, F-75252 Paris 5, France

[21] Univ Paris 07, F-75252 Paris 5, France

[22] Charles Univ Prague, Inst Particle & Nucl Phys, CR-18000 Prague 8, Czech Republic

[23] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany

[24] Univ Namibia, Windhoek, Namibia

[25] Nagoya Univ, Dept Astrophys, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[26] Nagoya Univ, So Observ, Chikusa Ku, Nagoya, Aichi 4648602, Japan

来源：

ASTRONOMY & ASTROPHYSICS | 2007年 / 469卷 / 01期

关键词：

gamma rays : observations;

D O I：

10.1051/0004-6361:20077299

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 MWC148 and/or the lower energy gamma-ray source 3EGJ0634+0521. No evidence for an associated molecular cloud was found in the CO data.

引用

页码：L1 / L4

页数：4

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