周期为50年的双星系统TeV伽马射线辐射的近星点观测
高能天体物理现象
2019-12-02 v1
摘要
我们报告了使用VERITAS和MAGIC成像大气切伦科夫望远镜阵列，在100 GeV至20 TeV能量范围内对脉冲星/Be星双星系统PSR J2032+4127 / MT91 213的观测。该双星轨道周期约为50年，最近一次近星点发生于2017年11月13日。我们的观测跨度从近星点前18个月到其后1个月。我们探测到一个新的点状伽马射线源，与PSR J2032+4127 / MT91 213的位置重合。伽马射线光变曲线和能谱在近星点经过期间被良好表征。流量在至少一个数量级上变化，在近星点达到峰值，从而将这一TeV源与脉冲星/Be星系统牢固关联。近星点前的观测显示能谱在约0.5 TeV能量处出现截断。该结果向已知的少量TeV双星群体增添了一名新成员，并且它仅是该类中第二个致密天体的性质和本质被牢固确定的源。我们将伽马射线结果与Neil Gehrels Swift天文台搭载的X射线望远镜（XRT）测得的的光变曲线以及该系统近期理论模型的预测进行比较。我们得出结论，模型需要重大修正才能解释我们所观测发射的细节，并讨论了该双星系统与重叠的稳态扩展源TeV J2032+4130之间的关系。
引用
@article{arxiv.1810.05271,
title = {Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period},
author = {The VERITAS Collaboration and A. U. Abeysekara and W. Benbow and R. Bird and A. Brill and R. Brose and J. H. Buckley and A. J. Chromey and M. K. Daniel and A. Falcone and J. P. Finley and L. Fortson and A. Furniss and A. Gent and G. H. Gillanders and D. Hanna and T. Hassan and O. Hervet and J. Holder and G. Hughes and T. B. Humensky and P. Kaaret and P. Kar and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and S. Kumar and M. J. Lang and T. T. Y. Lin and G. Maier and P. Moriarty and R. Mukherjee and S. O'Brien and R. A. Ong and A. N. Otte and N. Park and A. Petrashyk and M. Pohl and E. Pueschel and J. Quinn and K. Ragan and G. T. Richards and E. Roache and I. Sadeh and M. Santander and S. Schlenstedt and G. H. Sembroski and I. Sushch and J. Tyler and V. V. Vassiliev and S. P. Wakely and A. Weinstein and R. M. Wells and P. Wilcox and A. Wilhelm and D. A. Williams and T. J Williamson and B. Zitzer and MAGIC Collaboration and : and V. A. Acciari and S. Ansoldi and L. A. Antonelli and A. Arbet Engels and D. Baack and A. Babić and B. Banerjee and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and E. Bernardini and A. Berti and J. Besenrieder and W. Bhattacharyya and C. Bigongiari and A. Biland and O. Blanch and G. Bonnoli and G. Busetto and R. Carosi and G. Ceribella and S. Cikota and S. M. Colak and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and V. D'Elia and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and M. Delfino and J. Delgado and F. Di Pierro and E. Do Souto Espiñera and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Elsaesser and V. Fallah Ramazani and A. Fattorini and A. Fernández-Barral and G. Ferrara and D. Fidalgo and L. Foffano and M. V. Fonseca and L. Font and C. Fruck and D. Galindo and S. Gallozzi and R. J. García López and M. Garczarczyk and S. Gasparyan and M. Gaug and P. Giammaria and N. Godinović and D. Guberman and D. Hadasch and A. Hahn and T. Hassan and J. Herrera and J. Hoang and D. Hrupec and S. Inoue and K. Ishio and Y. Iwamura and H. Kubo and J. Kushida and D. Kuveždić and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and S. Lombardi and F. Longo and M. López and A. López-Oramas and B. Machado de Oliveira Fraga and C. Maggio and P. Majumdar and M. Makariev and M. Mallamaci and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Martínez and S. Masuda and D. Mazin and M. Minev and J. M. Miranda and R. Mirzoyan and E. Molina and A. Moralejo and V. Moreno and E. Moretti and P. Munar-Adrover and V. Neustroev and A. Niedzwiecki and M. Nievas Rosillo and C. Nigro and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogués and M. Nöthe and S. Paiano and J. Palacio and D. Paneque and R. Paoletti and J. M. Paredes and G. Pedaletti and P. Peñil and M. Peresano and M. Persic and P. G. Prada Moroni and E. Prandini and I. Puljak and J. R. Garcia and W. Rhode and M. Ribó and J. Rico and C. Righi and A. Rugliancich and L. Saha and N. Sahakyan and T. Saito and K. Satalecka and T. Schweizer and J. Sitarek and I. Šnidarić and D. Sobczynska and A. Somero and A. Stamerra and M. Strzys and T. Surić and F. Tavecchio and P. Temnikov and T. Terzić and M. Teshima and N. Torres-Albà and S. Tsujimoto and J. van Scherpenberg and G. Vanzo and M. Vazquez Acosta and I. Vovk and M. Will and D. Zarić},
journal= {arXiv preprint arXiv:1810.05271},
year = {2019}
}
备注
12 pages, 3 figures, 1 table. Accepted for publication in ApJL