MAGIC 望远镜探测到的硬 TeV 极端耀变体新源
高能天体物理现象
2020-08-21 v2 星系天体物理
摘要
极端高频峰 BL Lac 天体(EHBLs)是表现出极高能同步辐射的耀变体。它们还具有非热伽马射线辐射,其峰值位于甚高能(VHE,E > 100 GeV)范围,在某些源中超过 1TeV:硬 TeV EHBL(如 1ES 0229+200)即属此列。为增加 EHBL 种群数量,2010 至 2017 年间用 MAGIC 望远镜观测了十个目标,共获得 262 小时高质量数据。数据辅以协调的 Swift 观测。X 射线数据分析确认除两个源外其余均为 EHBLs。这些源仅表现出温和变率及“越亮越硬”行为,此类天体典型如此。在 VHE 伽马射线波段,探测到三个新源,并对另一个新源发现信号迹象。每种情况下内禀能谱均与这些 EHBLs 具硬 TeV 特性的假设相容。构建了所有源的宽带能谱分布(SEDs)并在单区纯轻子模型框架下建模。VHE 伽马射线探测源也用 spine-layer 与质子同步辐射模型予以解释。三种模型均良好描述了 SEDs。但三种情景所得参数差异显著,尤其是磁化参数。本工作呈现了 EHBLs 的 VHE 伽马射线与多波段观测的首个小型星表。
引用
@article{arxiv.1911.06680,
title = {New hard-TeV extreme blazars detected with the MAGIC telescopes},
author = {MAGIC Collaboration and V. A. Acciari and S. Ansoldi and L. A. Antonelli and A. Arbet Engels and K. Asano 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 L. Bellizzi 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 Ž. Bošnjak and G. Busetto and R. Carosi and G. Ceribella and M. Cerruti and Y. Chai and A. Chilingaryan and S. Cikota and S. M. Colak and U. 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 D. Depaoli and F. Di Pierro and L. Di Venere and E. Do Souto Espiñeira and D. Dominis Prester and A. Donini and D. Dorner and M. Doro and D. Elsaesser and V. Fallah Ramazani and A. Fattorini and G. Ferrara and D. Fidalgo and L. Foffano and M. V. Fonseca and L. Font and C. Fruck and S. Fukami and R. J. García López and M. Garczarczyk and S. Gasparyan and M. Gaug and N. Giglietto and F. Giordano and N. Godinović and D. Green and D. Guberman and D. Hadasch and A. Hahn and J. Herrera and J. Hoang and D. Hrupec and M. Hütten and T. Inada and S. Inoue and K. Ishio and Y. Iwamura and L. Jouvin and D. Kerszberg and H. Kubo and J. Kushida and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and A. López-Oramas and S. Loporchio 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 D. Mazin and S. Mićanović and D. Miceli and M. Minev and J. M. Miranda and R. Mirzoyan and E. Molina and A. Moralejo and D. Morcuende and V. Moreno and E. Moretti and P. Munar-Adrover and V. Neustroev and C. Nigro and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogués and S. Nozaki and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and P. Peñil and M. Peresano and M. Persic and P. G. Prada Moroni and E. Prandini and I. Puljak 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 S. Sakurai and K. Satalecka and K. Schmidt and T. Schweizer and J. Sitarek and I. Šnidarić and D. Sobczynska and A. Somero and A. Stamerra and D. Strom and M. Strzys and Y. Suda and T. Surić and M. Takahashi and F. Tavecchio and P. Temnikov and T. Terzić and M. Teshima and N. Torres-Albà and L. Tosti and V. Vagelli and J. van Scherpenberg and G. Vanzo and M. Vazquez Acosta and C. F. Vigorito and V. Vitale and I. Vovk and M. Will and D. Zarić and C. Arcaro and A. Carosi and F. D'Ammando and F. Tombesi and A. Lohfink},
journal= {arXiv preprint arXiv:1911.06680},
year = {2020}
}
备注
30 pages, 9 figures. Corresponding author: E. Prandini. Main authors: C. Arcaro, V. Fallah Ramazani