HESS very-high-energy gamma-ray sources without identified counterparts

被引:187
作者
Aharonian, F. [1 ,13 ]
Akhperjanian, A. G. [2 ]
de Almeida, U. Barres [8 ]
Bazer-Bachi, A. R. [3 ]
Behera, B. [14 ]
Beilicke, M. [4 ]
Benbow, W. [1 ]
Bernloehr, K. [1 ,5 ]
Boisson, C. [6 ]
Bolz, O. [1 ]
Borrel, V. [3 ]
Braun, I. [1 ]
Brion, E. [7 ]
Brown, A. M. [8 ]
Buehler, R. [1 ]
Bulik, T. [24 ]
Buesching, I. [9 ]
Boutelier, T. [17 ]
Carrigan, S. [1 ]
Chadwick, P. M. [8 ]
Chounet, L. -M. [10 ]
Clapson, A. C. [1 ]
Coignet, G. [11 ]
Cornils, R. [4 ]
Costamante, L. [1 ,28 ]
Dalton, M. [5 ]
Degrange, B. [10 ]
Dickinson, H. J. [8 ]
Djannati-Atai, A. [12 ]
Domainko, W. [1 ]
Drury, L. O'C. [13 ]
Dubois, F. [11 ]
Dubus, G. [17 ]
Dyks, J. [24 ]
Egberts, K. [1 ]
Emmanoulopoulos, D. [14 ]
Espigat, P. [12 ]
Farnier, C. [15 ]
Feinstein, F. [15 ]
Fiasson, A. [15 ]
Foerster, A.
Fontaine, G. [10 ]
Funks, Seb. [5 ]
Fuessling, M. [5 ]
Gallant, Y. A. [15 ]
Giebels, B. [10 ]
Glicenstein, J. F. [7 ]
Glueck, B. [16 ]
Goret, P. [7 ]
Hadjichristidis, C. [8 ]
机构
[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany
[2] Yerevan Phys Inst, Yerevan 375036, Armenia
[3] CNRS, Ctr Etud Spatiale Rayonnements, UPS, F-31029 Toulouse 4, France
[4] Univ Hamburg, Inst Exptphys, D-22761 Hamburg, Germany
[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[6] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France
[7] CE Saclay, CEA, DSM, DAPNIA, F-91191 Gif Sur Yvette, France
[8] Univ Durham, Dept Phys, Durham DH1 3LE, England
[9] NW Univ, Univ Space Phys, ZA-2520 Potchefstroom, South Africa
[10] Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[11] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France
[12] Univ Paris 07, CNRS, APC, F-75205 Paris 13, France
[13] Dublin Inst Adv Studies, Dublin 2, Ireland
[14] Heidelberg Univ, D-69117 Heidelberg, Germany
[15] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS IN2P3, F-34095 Montpellier 5, France
[16] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany
[17] Univ Grenoble 1, CNRS, INSU, Lab Astrophys Grenoble, F-38041 Grenoble, France
[18] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany
[19] Univ Paris 07, Univ Paris 06, LPNHE, CNRS IN2P3, F-75252 Paris 7, France
[20] Charles Univ Prague, Inst Particle & Nucl Phys, CR-18000 Prague 8, Czech Republic
[21] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany
[22] Univ Namibia, Windhoek, Namibia
[23] Uniwersytet Jagiellonski, Obserwatorium Astron, Krakow, Poland
[24] Nicholas Copernicus Astron Ctr, Warsaw, Poland
[25] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
[26] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia
[27] Nicholas Copernicus Univ, Torun Ctr Astron, Torun, Poland
[28] CNRS, European Associated Lab Gamma Ray Astron, F-75700 Paris, France
来源
ASTRONOMY & ASTROPHYSICS | 2008年 / 477卷 / 01期
关键词
gamma rays : observations; Galaxy : general; cosmic rays; surveys;
D O I
10.1051/0004-6361:20078516
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Context. The detection of gamma rays in the very-high-energy (VHE) energy range (100 GeV-100 TeV) provides a direct view of the parent population of ultra-relativistic particles found in astrophysical sources. For this reason, VHE gamma rays are useful for understanding the underlying astrophysical processes in non-thermal sources. Aims. We investigate unidentified VHE gamma-ray sources that have been discovered with HESS in the most sensitive blind survey of the Galactic plane at VHE energies conducted so far. Methods. The HESS array of imaging atmospheric Cherenkov telescopes (IACTs) has a high sensitivity compared with previous instruments (similar to 0.01 Crab in 25 h observation time for a 5 sigma point-source detection). and with its large field of view, is well suited for scan-based observations. The on-going HESS survey of the inner Galaxy has revealed a large number of new VHE sources, and for each we attempt to associate the VHE emission with multi-wavelength data in the radio through X-ray wavebands. Results. For each of the eight unidentified VHE sources considered here, we present the energy spectra and sky maps of the sources and their environment. The VHE morphology is compared with available multi-wavelength data (mainly radio and X-rays). No plausible counterparts are found.
引用
收藏
页码:353 / 363
页数:11
相关论文
共 52 条
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