2010 年耀发活动期间奇特类星体 4C +21.35 的多频率研究
高能天体物理现象
2015-06-19 v3 宇宙学与河外天体物理
星系天体物理
摘要
MAGIC 于 2010 年 6 月 17 日发现来自 4C +21.35 (PKS 1222+216) 的快速变化甚高能 (VHE; E > 100 GeV) 伽马射线辐射，这一发现由费米大面积望远镜 (LAT) 在高能 (HE; E > 100 MeV) 伽马射线中检测到的高活动所触发，这对该平谱射电类星体中伽马射线发射区域的位置提出了有趣的问题。我们展示了 2010 年收集的从厘米波到 VHE 的 4C +21.35 多频率数据，以研究该源的性质并讨论可能的发射模型。VHE 探测的第一个迹象是由 MAGIC 于 2010 年 5 月 3 日观测到的，紧随费米 -LAT 检测到的一次伽马射线耀发之后，该耀发于 4 月 29 日达到峰值。因此，相同的发射机制可能是 2010 年耀发期间 HE 和 VHE 发射的原因。在 2010 年 4 月 20 日和 6 月 30 日检测到了两个光学峰值，时间上与两个伽马射线峰值接近但不同时，而在 X 射线和伽马射线发射之间未观察到明显的联系。从 2009 年初开始，在射电和毫米波段观测到流量密度增加，这与费米 -LAT 观测到的伽马射线活动增加相符，并于 2011 年 1 月 27 日在毫米波段 (230 GHz) 达到峰值。我们使用单区模型对 4C +21.35 在两次 VHE 探测期间和一个宁静态的谱能量分布 (SEDs) 进行了建模，发射来自宽线区外一个非常紧凑的区域。这三个 SEDs 可以通过同步自康普顿和来自尘埃环的种子光子的外康普顿发射的组合来拟合，仅在 epoch 之间改变电子分布参数。2010 年 4 月 29 日光谱的光学/UV 部分的拟合倾向于小于 6 个引力半径的内盘半径，正如人们从顺行旋转的 Kerr 黑洞所预期的那样。
引用
@article{arxiv.1403.7534,
title = {Multifrequency Studies of the Peculiar Quasar 4C +21.35 During the 2010 Flaring Activity},
author = {M. Ackermann and M. Ajello and A. Allafort and E. Antolini and G. Barbiellini and D. Bastieri and R. Bellazzini and E. Bissaldi and E. Bonamente and J. Bregeon and M. Brigida and P. Bruel and R. Buehler and S. Buson and G. A. Caliandro and R. A. Cameron and P. A. Caraveo and E. Cavazzuti and C. Cecchi and R. C. G. Chaves and A. Chekhtman and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and J. Conrad and S. Cutini and F. D'Ammando and F. de Palma and C. D. Dermer and E. do Couto e Silva and D. Donato and P. S. Drell and C. Favuzzi and J. Finke and W. B. Focke and A. Franckowiak and Y. Fukazawa and P. Fusco and F. Gargano and D. Gasparrini and N. Gehrels and N. Giglietto and F. Giordano and M. Giroletti and G. Godfrey and I. A. Grenier and S. Guiriec and M. Hayashida and J. W. Hewitt and D. Horan and R. E. Hughes and G. Iafrate and A. S. Johnson and J. Knodlseder and M. Kuss and J. Lande and S. Larsson and L. Latronico and F. Longo and F. Loparco and M. N. Lovellette and P. Lubrano and M. Mayer and M. N. Mazziotta and J. E. McEnery and P. F. Michelson and T. Mizuno and M. E. Monzani and A. Morselli and I. V. Moskalenko and S. Murgia and R. Nemmen and E. Nuss and T. Ohsugi and M. Orienti and E. Orlando and J. S. Perkins and M. Pesce-Rollins and F. Piron and G. Pivato and T. A. Porter and S. Rainò and M. Razzano and A. Reimer and O. Reimer and D. A. Sanchez and A. Schulz and C. Sgrò and E. J. Siskind and G. Spandre and P. Spinelli and L. Stawarz and H. Takahashi and T. Takahashi and J. G. Thayer and J. B. Thayer and D. J. Thompson and M. Tinivella and D. F. Torres and G. Tosti and E. Troja and T. L. Usher and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and M. Werner and B. L. Winer and D. L. Wood and K. S. Wood and J. Aleksic and S. Ansoldi and L. A. Antonelli and P. Antoranz and A. Babic and P. Bangale and U. Barres de Almeida and J. A. Barrio and J. Becerra Gonzalez and W. Bednarek and K. Berger and E. Bernardini and A. Biland and O. Blanch and R. K. Bock and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and E. Carmona and A. Carosi and D. Carreto Fidalgo 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 G. De Caneva and B. De Lotto and C. Delgado Mendez and M. Doert and A. Dominguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher and D. Elsaesser and E. Farina and D. Ferenc and M. V. Fonseca and L. Font and K. Frantzen and C. Fruck and R. J. Garcia Lopez and M. Garczarczyk and D. Garrido Terrats and M. Gaug and G. Giavitto and N. Godinovic and A. Gonzalez Munoz and S. R. Gozzini and D. Hadasch and A. Herrero and D. Hildebrand and J. Hose and D. Hrupec and W. Idec and V. Kadenius and H. Kellermann and M. L. Knoetig and K. Kodani and Y. Konno and J. Krause and H. Kubo and J. Kushida and A. La Barbera and D. Lelas and N. Lewandowska and E. Lindfors and S. Lombardi and M. Lopez and R. Lopez-Coto and A. Lopez-Oramas and E. Lorenz and I. Lozano and M. Makariev and K. Mallot and G. Maneva and N. Mankuzhiyil and K. Mannheim and L. Maraschi and B. Marcote and M. Mariotti and M. Martinez and D. Mazin and U. Menzel and M. Meucci and J. M. Miranda and R. Mirzoyan and A. Moralejo and P. Munar-Adrover and D. Nakajima and A. Niedzwiecki and K. Nishijima and K. Nilsson and N. Nowak and R. Orito and A. Overkemping and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and S. Partini and M. Persic and F. Prada and P. G. Prada Moroni and E. Prandini and S. Preziuso and I. Puljak and R. Reinthal and W. Rhode and M. Ribo and J. Rico and J. Rodriguez Garcia and S. Rugamer and A. Saggion and T. Saito and K. Saito and M. Salvati and K. Satalecka and V. Scalzotto and V. Scapin and C. Schultz and T. Schweizer and S. N. Shore and A. Sillanpaa and J. Sitarek and I. Snidaric and D. Sobczynska and F. Spanier and V. Stamatescu and A. Stamerra and T. Steinbring and J. Storz and S. Sun and T. Suric and L. Takalo and H. Takami and F. Tavecchio and P. Temnikov and T. Terzic and D. Tescaro and M. Teshima and J. Thaele and O. Tibolla and T. Toyama and A. Treves and P. Vogler and R. M. Wagner and F. Zandanel and R. Zanin and M. F. Aller and E. Angelakis and D. A. Blinov and S. G. Djorgovski and A. J. Drake and N. V. Efimova and M. A. Gurwell and D. C. Homan and B. Jordan and E. N. Kopatskaya and Y. Y. Kovalev and O. M. Kurtanidze and A. Lahteenmaki and V. M. Larionov and M. L. Lister and E. Nieppola and M. G. Nikolashvili and E. Ros and T. Savolainen and L. A. Sigua and M. Tornikoski and .},
journal= {arXiv preprint arXiv:1403.7534},
year = {2015}
}
备注
46 pages, 10 figures, 4 tables. The Astrophysical Journal, Volume 786, Issue 2, article id. 157, 17 pp. Contact Authors: Filippo D'Ammando, Justin Finke, Davide Donato, Josefa Becerra Gonzalez, Tomislav Terzic. Figure 1 updated