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Multiwavelength observations of a VHE gamma-ray flare from PKS 1510-089 in 2015 | | MAGIC Collaboration
; M. L. Ahnen
; S. Ansoldi
; L. A. Antonelli
; C. Arcaro
; A. Babić
; B. Banerjee
; P. Bangale
; U. Barres de Almeida
; J. A. Barrio
; J. Becerra González
; W. Bednarek
; E. Bernardini
; A. Berti
; B. Biasuzzi
; A. Biland
; O. Blanch
; S. Bonnefoy
; G. Bonnoli
; F. Borracci
; T. Bretz
; R. Carosi
; A. Carosi
; A. Chatterjee
; P. Colin
; E. Colombo
; J. L. Contreras
; J. Cortina
; S. Covino
; P. Cumani
; P. Da Vela
; F. Dazzi
; A. De Angelis
; B. De Lotto
; E. de Oña Wilhelmi
; F. Di Pierro
; M. Doert
; A. Domínguez
; D. Dominis Prester
; D. Dorner
; M. Doro
; S. Einecke
; D. Eisenacher Glawion
; D. Elsaesser
; M. Engelkemeier
; V. Fallah Ramazani
; A. Fernández-Barral
; D. Fidalgo
; M. V. Fonseca
; L. Font
; C. Fruck
; D. Galindo
; R. J. García López
; M. Garczarczyk
; M. Gaug
; P. Giammaria
; N. Godinović
; D. Gora
; D. Guberman
; D. Hadasch
; A. Hahn
; T. Hassan
; M. Hayashida
; J. Herrera
; J. Hose
; D. Hrupec
; G. Hughes
; K. Ishio
; Y. Konno
; H. Kubo
; J. Kushida
; D. Kuveždić
; D. Lelas
; E. Lindfors
; S. Lombardi
; F. Longo
; M. López
; P. Majumdar
; M. Makariev
; G. Maneva
; M. Manganaro
; K. Mannheim
; L. Maraschi
; M. Mariotti
; M. Martínez
; D. Mazin
; U. Menzel
; R. Mirzoyan
; A. Moralejo
; E. Moretti
; D. Nakajima
; V. Neustroev
; A. Niedzwiecki
; M. Nievas Rosillo
; K. Nilsson
; K. Nishijima
; K. Noda
; L. Nogués
; S. Paiano
; J. Palacio
; M. Palatiello
; D. Paneque
; R. Paoletti
; J. M. Paredes
; X. Paredes-Fortuny
; G. Pedaletti
; M. Peresano
; L. Perri
; M. Persic
; J. Poutanen
; P. G. Prada Moroni
; E. Prandini
; I. Puljak
; J. R. Garcia
; I. Reichardt
; W. Rhode
; M. Ribó
; J. Rico
; T. Saito
; K. Satalecka
; S. Schroeder
; T. Schweizer
; S. N. Shore
; A. Sillanpää
; J. Sitarek
; I. Šnidarić
; D. Sobczynska
; A. Stamerra
; M. Strzys
; T. Surić
; L. Takalo
; F. Tavecchio
; P. Temnikov
; T. Terzić
; D. Tescaro
; M. Teshima
; D. F. Torres
; N. Torres-Albà
; T. Toyama
; A. Treves
; G. Vanzo
; M. Vazquez Acosta
; I. Vovk
; J. E. Ward
; M. Will
; M. H. Wu
; D. Zarić
; R. Desiante
; J. Becerra González
; F. D'Ammando
; S. Larsson
; C. M. Raiteri
; R. Reinthal
; A. Lähteenmäki
; E. Järvelä
; M. Tornikoski
; V. Ramakrishnan
; S. G. Jorstad
; A. P. Marscher
; V. Bala
; N. R. MacDonald
; N. Kaur
; Sameer
; K. Baliyan
; J. A. Acosta-Pulido
; C. Lazaro
; C. Martínez-Lombilla
; A. B. Grinon-Marin
; A. Pastor Yabar
; C. Protasio
; M. I. Carnerero
; H. Jermak
; I. A. Steele
; V. M. Larionov
; G. A. Borman
; T. S. Grishina
; | | Date: |
29 Oct 2016 | | Abstract: | Context. 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. Aims. We
study the broadband spectral and temporal properties of the PKS 1510-089
emission during a high gamma-ray state. Methods. We performed VHE gamma-ray
observations of PKS 1510-089 with the MAGIC telescopes during a high gamma-ray
state in May 2015. In order to perform broad-band 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. Results. PKS 1510-089 has been detected in a 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.
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. The broadband SED can be explained in the
External Compton scenario. | | Source: | arXiv, 1610.9416 | | Services: | Forum | Review | PDF | Favorites | |
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