发现来自双星系统1FGL J1018.6-5856的变甚高能伽马射线发射
高能天体物理现象
2016-08-08 v1
摘要
使用H.E.S.S.望远镜阵列对与Fermi-LAT -射线双星1FGL J1018.6-5856重合的甚高能(VHE)源HESS J1018-589 A的重新观测，导致了超过9的源探测显著性，以及发射的-射线流中变异性(/为238.3/155)的探测。该变异性确认了HESS J1018-589 A与Fermi-LAT探测到的高能-射线双星的关联，并确认该点源是一个新的甚高能双星系统。HESS J1018-589 A的能谱最好用幂律函数拟合，光子指数。发射一直探测到约20 TeV。在1 TeV处的平均微分流强为 TeV cm s，相当于相同能量下蟹状星云流强的约1%。在逐夜光变曲线中清晰探测到变异性。当按照16.58天的轨道周期折叠时，重分箱光变曲线与观测到的X射线和高能相位图同相达到峰值。将H.E.S.S.相位图拟合为恒定流强，提供了3水平的周期性证据。VHE相位图的形状和测量的能谱表明这是一个低倾角、低偏心率的系统，由于对产生导致的VHE -射线吸收影响较小(在300 GeV处 < 1)。
引用
@article{arxiv.1503.02711,
title = {Discovery of variable VHE gamma-ray emission from the binary system 1FGL J1018.6-5856},
author = {H. E. S. S. Collaboration and : and A. Abramowski and F. Aharonian and F. Ait Benkhali and A. G. Akhperjanian and E. O. Angüner and M. Backes and A. Balzer and Y. Becherini and J. Becker Tjus and D. Berge and S. Bernhard and K. Bernlöhr and E. Birsin and R. Blackwell and M. Böttcher and C. Boisson and J. Bolmont and P. Bordas and J. Bregeon and F. Brun and P. Brun and M. Bryan and T. Bulik and J. Carr and S. Casanova and N. Chakraborty and R. Chalme-Calvet and R. C. G. Chaves and A. Chen and M. Chrétien and S. Colafrancesco and G. Cologna and J. Conrad and C. Couturier and Y. Cui and I. D. Davids and B. Degrange and C. Deil and P. deWilt and A. Djannati-Ataï and W. Domainko and A. Donath and L. O'C. Drury and G. Dubus and K. Dutson and J. Dyks and M. Dyrda and T. Edwards and K. Egberts and P. Eger and J. -P. Ernenwein and P. Espigat and C. Farnier and S. Fegan and F. Feinstein and M. V. Fernandes and D. Fernandez and A. Fiasson and G. Fontaine and A. Förster and M. Füßling and S. Gabici and M. Gajdus and Y. A. Gallant and T. Garrigoux and G. Giavitto and B. Giebels and J. F. Glicenstein and D. Gottschall and A. Goyal and M. -H. Grondin and M. Grudzińska and D. Hadasch and S. Häffner and J. Hahn and J. Hawkes and G. Heinzelmann and G. Henri and G. Hermann and O. Hervet and A. Hillert and J. A. Hinton and W. Hofmann and P. Hofverberg and C. Hoischen and M. Holler and D. Horns and A. Ivascenko and A. Jacholkowska and C. Jahn and M. Jamrozy and M. Janiak and F. Jankowsky and I. Jung-Richardt and M. A. Kastendieck and K. Katarzyński and U. Katz and D. Kerszberg and B. Khélifi and M. Kieffer and S. Klepser and D. Klochkov and W. Kluźniak and D. Kolitzus and Nu. Komin and K. Kosack and S. Krakau and F. Krayzel and P. P. Krüger and H. Laffon and G. Lamanna and J. Lau and J. Lefaucheur and V. Lefranc and A. Lemière and M. Lemoine-Goumard and J. -P. Lenain and T. Lohse and A. Lopatin and C. -C. Lu and R. Lui and V. Marandon and A. Marcowith and C. Mariaud and R. Marx and G. Maurin and N. Maxted and M. Mayer and P. J. Meintjes and U. Menzler and M. Meyer and A. M. W. Mitchell and R. Moderski and M. Mohamed and K. Morå and E. Moulin and T. Murach and M. de Naurois and J. Niemiec and L. Oakes and H. Odaka and S. Öttl and S. Ohm and E. de Oña Wilhelmi and B. Opitz and M. Ostrowski and I. Oya and M. Panter and R. D. Parsons and M. Paz Arribas and N. W. Pekeur and G. Pelletier and P. -O. Petrucci and B. Peyaud and S. Pita and H. Poon and H. Prokoph and G. Pühlhofer and M. Punch and A. Quirrenbach and S. Raab and I. Reichardt and A. Reimer and O. Reimer and M. Renaud and R. de los Reyes and F. Rieger and C. Romoli and S. Rosier-Lees and G. Rowell and B. Rudak and C. B. Rulten and V. Sahakian and D. Salek and D. A. Sanchez and A. Santangelo and M. Sasaki and R. Schlickeiser and F. Schüssler and A. Schulz and U. Schwanke and S. Schwemmer and A. S. Seyffert and R. Simoni and H. Sol and F. Spanier and G. Spengler and F. Spies and Ł. Stawarz and R. Steenkamp and C. Stegmann and F. Stinzing and K. Stycz and I. Sushch and J. -P. Tavernet and T. Tavernier and A. M. Taylor and R. Terrier and M. Tluczykont and C. Trichard and K. Valerius and J. van der Walt and C. van Eldik and B. van Soelen and G. Vasileiadis and J. Veh and C. Venter and A. Viana and P. Vincent and J. Vink and F. Voisin and H. J. Völk and T. Vuillaume and S. J. Wagner and P. Wagner and R. M. Wagner and M. Weidinger and Q. Weitzel and R. White and A. Wierzcholska and P. Willmann and A. Wörnlein and D. Wouters and R. Yang and V. Zabalza and D. Zaborov and M. Zacharias and A. A. Zdziarski and A. Zech and F. Zefi and N. Żywucka},
journal= {arXiv preprint arXiv:1503.02711},
year = {2016}
}
备注
Accepted for publication in A&A