Chandra and HESS observations of the supernova remnant CTB 37B

被引:40
作者
Aharonian, F. [1 ,14 ]
Akhperjanian, A. G. [2 ]
de Almeida, U. Barres [8 ]
Bazer-Bachi, A. R. [3 ]
Behera, B. [15 ]
Beilicke, M. [4 ]
Benbow, W. [1 ]
Bernloehr, K. [1 ,5 ]
Boisson, C. [6 ]
Borrel, V. [3 ]
Braun, I. [1 ]
Brion, E. [7 ]
Brucker, J. [17 ]
Buehler, R. [1 ]
Bulik, T. [25 ]
Buesching, I. [9 ]
Boutelier, T. [18 ]
Carrigan, S. [1 ]
Chadwick, P. M. [8 ]
Chaves, R. C. G. [1 ]
Chounet, L. -M. [10 ]
Clapson, A. C. [1 ]
Coignet, G. [11 ]
Cornils, R. [4 ]
Costamante, L. [1 ]
Dalton, M. [5 ]
Degrange, B. [10 ]
Dickinson, H. J. [8 ]
Djannati-Atai, A. [12 ,13 ]
Domainko, W. [1 ]
Drury, L. O'C. [14 ]
Dubois, F. [11 ]
Dubus, G. [18 ]
Dyks, J. [25 ]
Egberts, K. [1 ]
Emmanoulopoulos, D. [15 ]
Espigat, P. [12 ,13 ]
Farnier, C. [16 ]
Feinstein, F. [16 ]
Fiasson, A. [16 ]
Foerster, A. [1 ]
Fontaine, G. [10 ]
Funk, S. [30 ]
Fuessling, M. [5 ]
Gabici, S. [14 ]
Gallant, Y. A. [16 ]
Giebels, B. [10 ]
Glicenstein, J. F. [7 ]
Glueck, B. [17 ]
Goret, P. [7 ]
机构
[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany
[2] Yerevan Phys Inst, Yerevan 375036, Armenia
[3] CNRS UPS, Ctr Etud Spatiale Rayonnements, 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, IRFU DSM, F-91191 Gif Sur Yvette, France
[8] Univ Durham, Dept Phys, Durham DH1 3LE, England
[9] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa
[10] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[11] Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France
[12] Univ Paris 07 Denis Diderot, CNRS, Astroparticule & Cosmol APC, F-75205 Paris 13, France
[13] Univ Paris 07, CEA, Observ Paris, CNRS,FranceUMR 7164, F-75221 Paris 05, France
[14] Dublin Inst Adv Studies, Dublin 2, Ireland
[15] Univ Heidelberg, Landessternwarte Konigstuhl, 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, Astrophys Lab, F-38041 Grenoble 9, France
[19] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany
[20] Univ Denis Diderot Paris 7, Univ Paris 06, CNRS, IN2P3,LPNHE, F-75252 Paris 5, France
[21] Charles Univ Prague, Inst Particle & Nucl Phys, Prague 18000 8, Czech Republic
[22] Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany
[23] Univ Namibia, Windhoek, Namibia
[24] Uniwersytet Jagiellonski, Obserwatorium Astron, Krakow, Poland
[25] Nicolaus Copernicus Astron Ctr, Warsaw, Poland
[26] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
[27] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia
[28] Nicholas Copernicus Univ, Torun Ctr Astron, Torun, Poland
[29] Stanford Univ, HEPL & KIPAC, Stanford, CA 94305 USA
[30] SLAC, Kavli Inst Particle Astrophys, Menlo Pk, CA 94025 USA
[31] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etudes Nucl Bordeaux Gradignan,UMR 5797, F-33175 Gradignan, France
来源
ASTRONOMY & ASTROPHYSICS | 2008年 / 486卷 / 03期
基金
英国科学技术设施理事会;
关键词
ISM : supernova remnants; gamma rays : observations; X-rays : individuals : G348.7+0.3;
D O I
10.1051/0004-6361:200809655
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discovered the > 100 GeV gamma-ray source, HESS J1713-381, apparently associated with the shell-type supernova remnant (SNR) CTB37B, using HESS in 2006. In 2007 we performed X-ray follow-up observations with Chandra with the aim of identifying a synchrotron counterpart to the TeV source and/or thermal emission from the SNR shell. These new Chandra data, together with additional TeV data, allow us to investigate the nature of this object in much greater detail than was previously possible. The new X-ray data reveal thermal emission from a similar to 4' region in close proximity to the radio shell of CTB37B. The temperature of this emission implies an age for the remnant of similar to 5000 years and an ambient gas density of similar to 0.5 cm(-3). Both these estimates are considerably uncertain due to the asymmetry of the SNR and possible modifications of the kinematics due to efficient cosmic ray (CR) acceleration. A bright (approximate to 7 x 10(-13) erg cm(-2) s(-1)) and unresolved (< 1 '') source (CXOUJ171405.7-381031), with a soft (Gamma approximate to 3.3) non-thermal spectrum is also detected in coincidence with the radio shell. Absorption indicates a column density consistent with the thermal emission from the shell, suggesting a genuine association rather than a chance alignment. The observed TeV morphology is consistent with an origin in the complete shell of CTB37B. The lack of diffuse non-thermal X-ray emission suggests an origin of the.-ray emission via the decay of neutral pions produced in interactions of protons and nuclei, rather than inverse Compton (IC) emission from relativistic electrons.
引用
收藏
页码:829 / 836
页数:8
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