2008 年 Mrk 501 的多波段观测
高能天体物理现象
2015-06-23 v1
摘要
Mrk 501 是最明亮的 TeV 能量耀变体之一，自 1996 年首次被甚高能 (VHE) 探测以来已得到广泛研究。我们的目标是详细刻画该源在非耀发（低）活动期间的伽马射线发射，以及从射电到 X 射线的发射，这类活动相较于偶发的耀发（高）活动较少被研究。我们于 2008 年 3 月至 5 月间组织了一次针对 Mrk 501 的多波段 (MW) 观测活动。这次多仪器努力包括了北半球最灵敏的 VHE 伽马射线仪器，即成像大气切伦科夫望远镜 MAGIC 和 VERITAS，以及 Swift、RXTE、F-GAMMA、GASP-WEBT 和其他合作组与仪器。研究发现，在观测活动期间 Mrk 501 处于低活动状态，其 VHE 通量范围为蟹状星云通量的 10%-20%。尽管如此，各种仪器仍探测到了显著的通量变化，且变异性随能量增加而增强的趋势明显。在活动期两种不同发射状态下的宽波段能谱分布，可以在均匀单区同步自康普顿模型内得到充分描述，其中（略）高的状态由电子数密度的增加来解释。这与之前关于该源在耀发和非耀发状态下宽波段发射的研究一致。我们首次报道了在低 VHE 活动期间 tentative 的 X 射线至 VHE 相关性。尽管显著性处于边缘水平，但这种在耀发活动中已被多次报道的 X 射线与 VHE 之间的正相关性表明，主导非耀发活动期间 X 射线/VHE 发射的机制与负责耀发活动期间发射的机制并无实质不同。
引用
@article{arxiv.1410.6391,
title = {Multiwavelength observations of Mrk 501 in 2008},
author = {MAGIC Collaboration and J. Aleksić 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 González 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. Domínguez 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. García López and M. Garczarczyk and D. Garrido Terrats and M. Gaug and G. Giavitto and N. Godinović and A. González Muñoz and S. R. Gozzini and A. Hadamek 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 J. Krause and J. Kushida and A. La Barbera and D. Lelas and N. Lewandowska and E. Lindfors and S. Lombardi and M. López and R. López-Coto and A. López-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. Martínez 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. 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. Ribó and J. Rico and J. Rodriguez Garcia and S. Rügamer 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. Sillanpää 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. Surić and L. Takalo and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and J. Thaele and O. Tibolla and D. F. Torres and T. Toyama and A. Treves and M. Uellenbeck and P. Vogler and R. M. Wagner and F. Zandanel and R. Zanin and VERITAS Collaboration and : and B. Behera and M. Beilicke and W. Benbow and K. Berger and R. Bird and A. Bouvier and V. Bugaev and M. Cerruti and X. Chen and L. Ciupik and E. Collins-Hughes and W. Cui and C. Duke and J. Dumm and A. Falcone and S. Federici and Q. Feng and J. P. Finley and L. Fortson and A. Furniss and N. Galante and G. H. Gillanders and S. Griffin and S. T. Griffiths and J. Grube and G. Gyuk and D. Hanna and J. Holder and C. A. Johnson and P. Kaaret and M. Kertzman and D. Kieda and H. Krawczynski and M. J. Lang and A. S Madhavan and G. Maier and P. Majumdar and K. Meagher and P. Moriarty and R. Mukherjee and D. Nieto and A. O'Faoláin de Bhróithe and R. A. Ong and A. N. Otte and A. Pichel and M. Pohl and A. Popkow and H. Prokoph and J. Quinn and J. Rajotte and G. Ratliff and L. C. Reyes and P. T. Reynolds and G. T. Richards and E. Roache and G. H. Sembroski and K. Shahinyan and F. Sheidaei and A. W. Smith and D. Staszak and I. Telezhinsky and M. Theiling and J. Tyler and A. Varlotta and S. Vincent and S. P. Wakely and T. C. Weekes and R. Welsing and D. A. Williams and A. Zajczyk and B. Zitzer and External Collaborators and : and M. Villata and C. M. Raiteri and M. Ajello and M. Perri and H. D. Aller and M. F. Aller and V. M. Larionov and N. V. Efimova and T. S. Konstantinova and E. N. Kopatskaya and W. P. Chen and E. Koptelova and H. Y. Hsiao and O. M. Kurtanidze and M. G. Nikolashvili and G. N. Kimeridze and B. Jordan and P. Leto and C. S. Buemi and C. Trigilio and G. Umana and A. Lahtenmaki and E. Nieppola and M. Tornikoski and J. Sainio and V. Kadenius and M. Giroletti and A. Cesarini and L. Fuhrmann and Yu. A. Kovalev and Y. Y. Kovalev},
journal= {arXiv preprint arXiv:1410.6391},
year = {2015}
}
备注
Accepted for publication in A&A