LS I +61{\deg}303在TeV能量下的超轨道变异性
高能天体物理现象
2019-08-15 v2
摘要
伽马射线双星LS I +61303是从厘米射电到甚高能（VHE; E100 GeV）的一个公认源。其宽带发射显示出~26.5天的周期性，与轨道周期一致。在射电中发现了一个更长的（超轨道）周期1667 8天，并在光学和高能（HE; E>100 MeV）伽马射线观测中得到确认。我们呈现了MAGIC进行的四年观测活动以及集中于搜索VHE发射中长时间尺度特征的历史数据。我们聚焦于VHE峰值超轨道调制的搜索，以及TeV发射与光学确定的星周盘延展之间的相关性搜索。MAGIC开展了一项四年观测活动。该源在周期性VHE爆发发生的轨道相位期间被观测（=0.55-0.75）。此外，我们在这些研究中加入了MAGIC历史观测和VERITAS合作组发布的数据。对于相关性研究，LS I +61303也在过去检测到零星VHE发射的轨道相位期间被观测（=0.75-1.0）。这些MAGIC观测与来自LIVERPOOL telescope的光学光谱同时。在轨道相位=0.5--0.75中周期性爆发的TeV流量被发现显示出与射电波段发现的~4.5年长期调制一致的年度变率。这种TeV流量的调制可以很好地用正弦函数来描述，最佳拟合周期为天。完整数据集跨越两个超轨道周期。没有证据表明TeV发射与Be星的质流失率相关，但这可能受到H流量显示的强短期（短至日内）变化的影响。
引用
@article{arxiv.1603.06973,
title = {Super-orbital variability of LS I +61{\deg}303 at TeV energies},
author = {MAGIC Collaboration and M. L. Ahnen and S. Ansoldi and L. A. Antonelli and P. Antoranz and A. Babic and B. Banerjee and P. Bangale and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and E. Bernardini and B. Biasuzzi and A. Biland and O. Blanch and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and S. Buson and A. Carosi and A. Chatterjee and R. Clavero and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and E. de Oña Wilhelmi and C. Delgado Mendez and F. Di Pierro and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher Glawion and D. Elsaesser and A. Fernández-Barral and D. Fidalgo and M. V. Fonseca and L. Font and K. Frantzen and C. Fruck and D. Galindo and R. J. García López and M. Garczarczyk and D. Garrido Terrats and M. Gaug and P. Giammaria and N. Godinović and A. González Muñoz and D. Gora and D. Guberman and D. Hadasch and A. Hahn and Y. Hanabata and M. Hayashida and J. Herrera and J. Hose and D. Hrupec and G. Hughes and W. Idec and K. Kodani and Y. Konno and H. Kubo and J. Kushida and A. La Barbera and D. Lelas and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and A. López-Oramas and P. Majumdar and M. Makariev and K. Mallot and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and B. Marcote and M. Mariotti and M. Martínez and D. Mazin and U. Menzel and J. M. Miranda and R. Mirzoyan and A. Moralejo and E. Moretti and D. Nakajima and V. Neustroev and A. Niedzwiecki and M. Nievas Rosillo and K. Nilsson and K. Nishijima and K. Noda and R. Orito and A. Overkemping and S. Paiano and J. Palacio and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and G. Pedaletti and M. Persic and J. Poutanen and P. G. Prada Moroni and E. Prandini and I. Puljak and W. Rhode and M. Ribó and J. Rico and J. Rodriguez Garcia and T. Saito and K. Satalecka and C. Schultz and T. Schweizer and S. N. Shore and A. Sillanpää and J. Sitarek and I. Snidaric and D. Sobczynska and A. Stamerra and T. Steinbring and M. Strzys and L. Takalo and H. Takami and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and J. Thaele and D. F. Torres and T. Toyama and A. Treves and V. Verguilov and I. Vovk and J. E. Ward and M. Will and M. H. Wu and R. Zanin and J. Casares and A. Herrero},
journal= {arXiv preprint arXiv:1603.06973},
year = {2019}
}
备注
7 pages, 4 figures, to be published in A&A