New hard-TeV extreme blazars detected with the MAGIC telescopes

New hard-TeV extreme blazars detected with the MAGIC telescopes

http://urn.fi/urn:nbn:fi-fe2020061845030

Teksti

Acciari, V. A. (V. A.) ; Ansoldi, S. (S.) ; Antonelli, L. A. (L. A.) ; Engels, A. A. (A. Arbet) ; Asano, K. (K.) ; Baack, D. (D.) ; Babic, A. (A.) ; Banerjee, B. (B.) ; Barres de Almeida, U. (U.) ; Barrio, J. A. (J. A.) ; Becerra Gonzalez, J. (J.) ; Bednarek, W. (W.) ; Bellizzi, L. (L.) ; Bernardini, E. (E.) ; Berti, A. (A.) ; Besenrieder, J. (J.) ; Bhattacharyya, W. (W.) ; Bigongiari, C. (C.) ; Biland, A. (A.) ; Blanch, O. (O.) ; Bonnoli, G. (G.) ; Bosnjak, Z. (Z.) ; Busetto, G. (G.) ; Carosi, R. (R.) ; Ceribella, G. (G.) ; Cerruti, M. (M.) ; Chai, Y. (Y.) ; Chilingaryan, A. (A.) ; Cikota, S. (S.) ; Colak, S. M. (S. M.) ; Colin, U. (U.) ; Colombo, E. (E.) ; Contreras, J. L. (J. L.) ; Cortina, J. (J.) ; Covino, S. (S.) ; D'Elia, V. (V) ; Da Vela, P. (P.) ; Dazzi, F. (F.) ; De Angelis, A. (A.) ; De Lotto, B. (B.) ; Delfino, M. (M.) ; Delgado, J. (J.) ; Depaoli, D. (D.) ; Di Pierro, F. (F.) ; Di Venere, L. (L.) ; Do Souto Espineira, E. (E.) ; Prester, D. D. (D. Dominis) ; Donini, A. (A.) ; Dorner, D. (D.) ; Doro, M. (M.) ; Elsaesser, D. (D.) ; Ramazani, V. F. (V. Fallah) ; Fattorini, A. (A.) ; Ferrara, G. (G.) ; Fidalgo, D. (D.) ; Foffano, L. (L.) ; Fonseca, M. V. (M., V) ; Font, L. (L.) ; Fruck, C. (C.) ; Fukami, S. (S.) ; Garcia Lopez, R. J. (R. J.) ; Garczarczyk, M. (M.) ; Gasparyan, S. (S.) ; Gaug, M. (M.) ; Giglietto, N. (N.) ; Giordano, F. (F.) ; Godinovic, N. (N.) ; Green, D. (D.) ; Guberman, D. (D.) ; Hadasch, D. (D.) ; Hahn, A. (A.) ; Herrera, J. (J.) ; Hoang, J. (J.) ; Hrupec, D. (D.) ; Huetten, M. (M.) ; Inada, T. (T.) ; Inoue, S. (S.) ; Ishio, K. (K.) ; Iwamura, Y. (Y.) ; Jouvin, L. (L.) ; Kerszberg, D. (D.) ; Kubo, H. (H.) ; Kushida, J. (J.) ; Lamastra, A. (A.) ; Lelas, D. (D.) ; Leone, F. (F.) ; Lindfors, E. (E.) ; Lombardi, S. (S.) ; Longo, F. (F.) ; Lopez, M. (M.) ; Lopez-Coto, R. (R.) ; Lopez-Oramas, A. (A.) ; Loporchio, S. (S.) ; Machado de Oliveira Fraga, B. (B.) ; Maggio, C. (C.) ; Majumdar, P. (P.) ; Makariev, M. (M.) ; Mallamaci, M. (M.) ; Maneva, G. (G.) ; Manganaro, M. (M.) ; Mannheim, K. (K.) ; Maraschi, L. (L.) ; Mariotti, M. (M.) ; Martinez, M. (M.) ; Mazin, D. (D.) ; Micanovic, S. (S.) ; Miceli, D. (D.) ; Minev, M. (M.) ; Miranda, J. M. (J. M.) ; Mirzoyan, R. (R.) ; Molina, E. (E.) ; Moralejo, A. (A.) ; Morcuende, D. (D.) ; Moreno, V. (V) ; Moretti, E. (E.) ; Munar-Adrover, P. (P.) ; Neustroev, V. (V) ; Nigro, C. (C.) ; Nilsson, K. (K.) ; Ninci, D. (D.) ; Nishijima, K. (K.) ; Noda, K. (K.) ; Nogues, L. (L.) ; Nozaki, S. (S.) ; Paiano, S. (S.) ; Palatiello, M. (M.) ; Paneque, D. (D.) ; Paoletti, R. (R.) ; Paredes, J. M. (J. M.) ; Penil, P. (P.) ; Peresano, M. (M.) ; Persic, M. (M.) ; Moroni, P. G. (P. G. Prada) ; Prandini, E. (E.) ; Puljak, I. (I) ; Rhode, W. (W.) ; Ribo, M. (M.) ; Rico, J. (J.) ; Righi, C. (C.) ; Rugliancich, A. (A.) ; Saha, L. (L.) ; Sahakyan, N. (N.) ; Saito, T. (T.) ; Sakurai, S. (S.) ; Satalecka, K. (K.) ; Schmidt, K. (K.) ; Schweizer, T. (T.) ; Sitarek, J. (J.) ; Snidaric, I. (I) ; Sobczynska, D. (D.) ; Somero, A. (A.) ; Stamerra, A. (A.) ; Strom, D. (D.) ; Strzys, M. (M.) ; Suda, Y. (Y.) ; Suric, T. (T.) ; Takahashi, M. (M.) ; Tavecchio, F. (F.) ; Temnikov, P. (P.) ; Terzic, T. (T.) ; Teshima, M. (M.) ; Torres-Alba, N. (N.) ; Tosti, L. (L.) ; Vagelli, V. (V.) ; van Scherpenberg, J. (J.) ; Vanzo, G. (G.) ; Vazquez Acosta, M. (M.) ; Vigorito, C. F. (C. F.) ; Vitale, V. (V.) ; Vovk, I. (I) ; Will, M. (M.) ; Zaric, D. (D.) ; Arcaro, C. (C.) ; Carosi, A. (A.) ; D'Ammando, F. (F.) ; Tombesi, F. (F.) ; Lohfink, A. (A.)

IOP Publishing

Abstract

Extreme high-frequency-peaked BL Lac objects (EHBLs) are blazars that exhibit extremely energetic synchrotron emission. They also feature nonthermal gamma-ray emission whose peak lies in the very high-energy (VHE, E > 100 GeV) range, and in some sources exceeds 1 TeV: this is the case for hard-TeV EHBLs such as 1ES 0229+200. With the aim of increasing the EHBL population, 10 targets were observed with the MAGIC telescopes from 2010 to 2017, for a total of 265 hr of good-quality data. The data were complemented by coordinated Swift observations. The X-ray data analysis confirms that all but two sources are EHBLs. The sources show only a modest variability and a harder-when-brighter behavior, typical for this class of objects. At VHE gamma-rays, three new sources were detected and a hint of a signal was found for another new source. In each case, the intrinsic spectrum is compatible with the hypothesis of a hard-TeV nature of these EHBLs. The broadband spectral energy distributions (SEDs) of all sources are built and modeled in the framework of a single-zone, purely leptonic model. The VHE gamma-ray-detected sources were also interpreted with a spine–layer model and a proton synchrotron model. The three models provide a good description of the SEDs. However, the resulting parameters differ substantially in the three scenarios, in particular the magnetization parameter. This work presents the first mini catalog of VHE gamma-ray and multiwavelength observations of EHBLs.

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