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Multiwavelength observations of a VHE gamma-ray flare from PKS 1510−089 in 2015


(MAGIC Collaboration) Ahnen, M.L.; Ansoldi, S.; Antonelli, L.A.; Arcaro, C.; Babić, Ana; Banerjee, B.; Bangale, P.; Barres de Almeida, U.; Barrio, J. A.; Bednarek, W. et al.
Multiwavelength observations of a VHE gamma-ray flare from PKS 1510−089 in 2015 // Astronomy & astrophysics (Berlin), 603 (2017), A29, 12 doi:10.1051/0004-6361/201629960 (međunarodna recenzija, članak, znanstveni)


Naslov
Multiwavelength observations of a VHE gamma-ray flare from PKS 1510−089 in 2015

Autori
Ahnen, M.L. ; Ansoldi, S. ; Antonelli, L.A. ; Arcaro, C. ; Babić, Ana ; Banerjee, B. ; Bangale, P. ; Barres de Almeida, U. ; Barrio, J. A. ; Bednarek, W. ; Bernardini, E. ; Berti, A. ; Biasuzzi, B. ; Biland, A. ; Blanch, O. ; Bonnefoy, S. ; Bonnoli, G. ; Borracci, F. ; Bretz, T. ; Carosi, R. ; Carosi, A. ; Chatterjee, A. ; Colin, P. ; Colombo, E. ; Contreras, J.L. ; Cortina, J. ; Covino, S. ; Cumani, P. ; Da Vela, P. ; Dazzi, F. ; De Angelis, A. ; De Lotto, B. ; de Oña Wilhelmi, E. ; Di Pierro, F. ; Doert, M. ; Domínguez, A. ; Dominis Prester, Dijana ; Dorner, D. ; Doro, M. ; Einecke, S. ; Eisenacher Glawion, D. ; Elsaesser, D. ; Engelkemeier, M. ; Fallah Ramazani, V. ; Fernández-Barral, A. ; Fidalgo, D. ; Fonseca, M. V. ; Font, L. ; Fruck, C. ; Galindo, D. ; García López, R.J. ; Garczarczyk, M. ; Gaug, M. ; Giammaria, P. ; Godinović, Nikola ; Gora, D. ; Guberman, D. ; Hadasch, D. ; Hahn, A. ; Hassan, T. ; Hayashida, M. ; Herrera, J. ; Hose, J. ; Hrupec, Dario ; Hughes, G. ; Ishio, K. ; Konno, Y. ; Kubo, H. ; Kushida, J. ; Kuveždić, Danijela ; Lelas, Damir ; Lindfors, E. ; Lombardi, S. ; Longo, F. ; López, M. ; Majumdar, P. ; Makariev, M. ; Maneva, G. ; Manganaro, M. ; Mannheim, K. ; Maraschi, L. ; Mariotti, M. ; Martínez, M. ; Mazin, D. ; Menzel, U. ; Mirzoyan, R. ; Moralejo, A. ; Moretti, E. ; Nakajima, D. ; Neustroev, V. ; Niedzwiecki, A. ; Nievas Rosillo, M. ; Nilsson, K. ; Nishijima, K. ; Noda, K. ; Nogués, L. ; Paiano, S. ; Palacio, J. ; Palatiello, M. ; Paneque, D. ; Paoletti, R. ; Paredes, J.M. ; Paredes-Fortuny, X. ; Pedaletti, G. ; Peresano, M. ; Perri, L. ; Peršić, M. ; Poutanen, J. ; Prada Moroni, P.G. ; Prandini, E. ; Puljak, Ivica ; Garcia, J.R. ; Reichardt, I. ; Rhode, W. ; Ribó, M. ; Rico, J. ; Saito, T. ; Satalecka, K. ; Schroeder, S. ; Schweizer, T. ; Shore, S.N. ; Sillanpää, A. ; Sitarek, J. ; Šnidarić, Iva ; Sobczynska, D. ; Stamerra, A. ; Strzys, M. ; Surić, Tihomir ; Takalo, L. ; Tavecchio, F. ; Temnikov, P. ; Terzić, Tomislav ; Tescaro, D. ; Teshima, M. ; Torres, D.F. ; Torres-Albà, N. ; Toyama, T. ; Treves, A. ; Vanzo, G. ; Vazquez Acosta, M. ; Vovk, I. ; Ward, J.E. ; Will, M. ; Wu, M.H. ; Zarić, Darko ; Desiante, R. ; Becerra González, J. ; D’Ammando, F. ; Larsson, S. ; Raiteri, C.M. ; Reinthal, R. ; Lähteenmäki, A. ; Järvelä, E. ; Tornikoski, M. ; Ramakrishnan, V. ; Jorstad, S. G. ; Marscher, A.P. ; Bala, V. ; MacDonald, N.R. ; Kaur, N. ; Sameer, undefined ; Baliyan, K. ; Acosta-Pulido, J. A. ; Lazaro, C. ; Martínez-Lombilla, C. ; Grinon-Marin, A.B. ; Pastor Yabar, A. ; Protasio, C. ; Carnerero, M.I. ; Jermak, H. ; Steele, I.A. ; Larionov, V.M. ; Borman, G.A. ; Grishina, T.S.

Kolaboracija
MAGIC Collaboration

Izvornik
Astronomy & astrophysics (Berlin) (0004-6361) 603 (2017); A29, 12

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Galaxies ; active ; galaxies: jets ; gamma rays: galaxies ; quasars: individual: PKS 1510-089

Sažetak
PKS 1510–089 is one of only a few flat spectrum radio quasars detected in the VHE (very-high-energy, >100 GeV) gamma-ray band. We study the broadband spectral and temporal properties of the PKS 1510–089 emission during a high gamma-ray state. We performed VHE gamma-ray observations of PKS 1510–089 with the MAGIC telescopes during a long high gamma-ray state in May 2015. In order to perform broadband modelling of the source, we have also gathered contemporaneous multiwavelength data in radio, IR, optical photometry and polarization, UV, X-ray and GeV gamma-ray ranges. We construct a broadband spectral energy distribution (SED) in two periods, selected according to VHE gamma-ray state. PKS 1510–089 has been detected by MAGIC during a few day-long observations performed in the middle of a long, high optical and gamma-ray state, showing for the first time a significant VHE gamma-ray variability. Similarly to the optical and gamma-ray high state of the source detected in 2012, it was accompanied by a rotation of the optical polarization angle and the emission of a new jet component observed in radio. However, due to large uncertainty on the knot separation time, the association with the VHE gamma-ray emission cannot be firmly established. The spectral shape in the VHE band during the flare is similar to the ones obtained during previous measurements of the source. The observed flux variability sets for the first time constraints on the size of the region from which VHE gamma rays are emitted. We model the broadband SED in the framework of the external Compton scenario and discuss the possible emission site in view of multiwavelength data and alternative emission models.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Fakultet elektrotehnike i računarstva, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Osijeku - Odjel za fiziku,
Sveučilište u Rijeci - Odjel za fiziku

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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