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arXiv 1606.05404astro-ph.HE
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向SGR1806-20、LBV1806-20和星团Cl*1806-20的扩展gamma-ray发射

Extended VHE gamma-ray emission towards SGR1806-20, LBV1806-20, and stellar cluster Cl*1806-20

H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian, E. O. Angüner, M. Arrieta, P. Aubert, M. Backes, A. Balzer, M. Barnard, Y. Becheri… 展开作者

H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian, E. O. Angüner, M. Arrieta, P. Aubert, M. Backes, A. Balzer, M. Barnard, Y. Becherini, J. Becker Tjus, D. Berge, S. Bernhard, K. Bernlöhr, E. Birsin, R. Blackwell, M. Böttcher, C. Boisson, J. Bolmont, P. Bordas, J. Bregeon, F. Brun, P. Brun, M. Bryan, T. Bulik, M. Capasso, J. Carr, S. Casanova, N. Chakraborty, R. Chalme-Calvet, R. C. G. Chaves, A. Chen, J. Chevalier, M. Chrétien, S. Colafrancesco, G. Cologna, B. Condon, J. Conrad, C. Couturier, Y. Cui, I. D. Davids, B. Degrange, C. Deil, P. deWilt, A. Djannati-Ataï, W. Domainko, A. Donath, L. O'C. Drury, G. Dubus, K. Dutson, J. Dyks, M. Dyrda, T. Edwards, K. Egberts, P. Eger, J. -P. Ernenwein, S. Eschbach, C. Farnier, S. Fegan, M. V. Fernandes, A. Fiasson, G. Fontaine, A. Förster, S. Funk, M. Füßling, S. Gabici, M. Gajdus, Y. A. Gallant, T. Garrigoux, G. Giavitto, B. Giebels, J. F. Glicenstein, D. Gottschall, A. Goyal, M. -H. Grondin, M. Grudzińska, D. Hadasch, J. Hahn, J. Hawkes, G. Heinzelmann, G. Henri, G. Hermann, O. Hervet, A. Hillert, J. A. Hinton, W. Hofmann, C. Hoischen, M. Holler, D. Horns, A. Ivascenko, A. Jacholkowska, M. Jamrozy, M. Janiak, D. Jankowsky, F. Jankowsky, M. Jingo, T. Jogler, L . Jouvin, I. Jung-Richardt, M. A. Kastendieck, K. Katarzyński, U. Katz, D. Kerszberg, B. Khélifi, M. Kieffer, J. King, S. Klepser, D. Klochkov, W. Kluźniak, D. Kolitzus, Nu. Komin, K. Kosack, S. Krakau, M. Kraus, F. Krayzel, P. P. Krüger, H. Laffon, G. Lamanna, J. Lau, J. -P. Lees, J. Lefaucheur, V. Lefranc, A. Lemière, M. Lemoine-Goumard, J. -P. Lenain, E. Leser, T. Lohse, M. Lorentz, R. Liu, I. Lypova, V. Marandon, A. Marcowith, C. Mariaud, R. Marx, G. Maurin, N. Maxted, M. Mayer, P. J. Meintjes, U. Menzler, M. Meyer, A. M. W. Mitchell, R. Moderski, M. Mohamed, K. Morå, E. Moulin, T. Murach, M. de Naurois, F. Niederwanger, J. Niemiec, L. Oakes, H. Odaka, S. Öttl, S. Ohm, M. Ostrowski, I. Oya, M. Padovani, M. Panter, R. D. Parsons, M. Paz Arribas, N. W. Pekeur, G. Pelletier, P. -O. Petrucci, B. Peyaud, S. Pita, H. Poon, D. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, A. Reimer, O. Reimer, M. Renaud, R. de los Reyes, F. Rieger, C. Romoli, S. Rosier-Lees, G. Rowell, B. Rudak, C. B. Rulten, V. Sahakian, D. Salek, D. A. Sanchez, A. Santangelo, M. Sasaki, R. Schlickeiser, F. Schüssler, A. Schulz, U. Schwanke, S. Schwemmer, A. S. Seyffert, N. Shafi, I. Shilon, R. Simoni, H. Sol, F. Spanier, G. Spengler, F. Spies, L. Stawarz, R. Steenkamp, C. Stegmann, F. Stinzing, K. Stycz, I. Sushch, J. -P. Tavernet, T. Tavernier, A. M. Taylor, R. Terrier, M. Tluczykont, C. Trichard, R. Tuffs, J. van der Walt, C. van Eldik, B. van Soelen, G. Vasileiadis, J. Veh, C. Venter, A. Viana, P. Vincent, J. Vink, F. Voisin, H. J. Völk, T. Vuillaume, Z. Wadiasingh, S. J. Wagner, P. Wagner, R. M. Wagner, R. White, A. Wierzcholska, P. Willmann, A. Wörnlein, D. Wouters, R. Yang, V. Zabalza, D. Zaborov, M. Zacharias, A. A. Zdziarski, A. Zech, F. Zefi, A. Ziegler, N. Zywucka

摘要:

使用高能光谱系统(H.E.S.S.)通过使用望远镜,我们发现了一个稳定的、扩展的甚高能量(VHE)伽马射线源,朝向明亮的蓝色变星候选者LBV 1806 -20、大质量星团Cl*1806-20和磁星SGR 1806 -20。新的VHE源HESSJ 1808 -204在大于6 sigma的统计显著性(试验后)下被探测到,光子通量归一化为$(2.9 \pm 0.4_{\rm stat} \pm 0.5_{\rm sys})\times 10^{-13}$ \,ph\,cm $^{-2}$ \,s $^{-1}$ \,TeV $^{-1}$在1 TeV,幂律光子指数为$2.3\pm0.2_{\rm stat}\pm 0.3_{\rm sys}$。这个源的光度(0.2到10 TeV;换算到距离d=8.7kpc)是$L_{\rm VHE}\sim1.6 \times 10^{34}(d/{8.7kpc})^2$,erg,s $^{-1}$。VHE γ射线辐射是扩展的,并且由具有$0.095^\circ \pm 0.015^\circ$的统计标准偏差的单个高斯很好地拟合。这一扩展类似于同步辐射射电星云G10.0-0.3,它被认为是由LBV 1806 -20提供动力的。VHE伽马射线光度可以由LBV 1806 -20的恒星风光度和/或Cl*1806-20的大质量恒星成员提供。或者,来自SGR 1806 -20的磁耗散(例如,通过重连)可以潜在地解释VHE光度。导致HESSJ 1808 -204的加速粒子的起源和强子和/或轻子性质尚不清楚。如果与SGR 1806 -20相关,磁星的潜在年轻年龄(650年)可以用来推断这些粒子的传输极限,以匹配VHE源的大小。这一发现为磁星、大质量恒星和/或星团的高能粒子加速潜力提供了新的兴趣。

英文摘要:

Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) gamma-ray source towards the luminous blue variable candidate LBV1806-20, massive stellar cluster Cl*1806-20, and magnetar SGR1806-20. The new VHE source, HESSJ1808-204, was detected at a statistical significance of >6sigma (post-trial) with a photon flux normalisation $(2.9 \pm 0.4_{\rm stat} \pm 0.5_{\rm sys})\times 10^{-13}$\,ph\,cm$^{-2}$\,s$^{-1}$\,TeV$^{-1}$ at 1TeV and a power-law photon index of $2.3\pm0.2_{\rm stat}\pm 0.3_{\rm sys}$. The luminosity of this source (0.2 to 10 TeV; scaled to distance d=8.7kpc) is $L_{\rm VHE}\sim1.6 \times 10^{34}(d/{8.7kpc})^2$\,erg\,s$^{-1}$. The VHE gamma-ray emission is extended and is well fit by a single Gaussian with statistical standard deviation of $0.095^\circ \pm 0.015^\circ$. This extension is similar to that of the synchrotron radio nebula G10.0-0.3, which is thought to be powered by LBV1806-20. The VHE gamma-ray luminosity could be provided by the stellar wind luminosity of LBV1806-20 by itself and/or the massive star members of Cl*1806-20. Alternatively, magnetic dissipation (e.g. via reconnection) from SGR1806-20 can potentially account for the VHE luminosity. The origin and hadronic and/or leptonic nature of the accelerated particles responsible for HESSJ1808-204 is not yet clear. If associated with SGR1806-20, the potentially young age of the magnetar (650yr) can be used to infer the transport limits of these particles to match the VHE source size. This discovery provides new interest in the potential for high-energy particle acceleration from magnetars, massive stars, and/or stellar clusters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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