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

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • M. L. Ahnen
  • S. Ansoldi
  • L. A. Antonelli
  • C. Arcaro
  • A. Babić
  • B. Banerjee
  • P. Bangale
  • U. Barres de Almeida
  • J. A. Barrio
  • 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. 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. Rodriguez 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
  • Eric J Ward
  • M. Will
  • M. H. Wu
  • D. Zarić
  • R. Desiante
  • J. Becerra González
  • F. "D'Ammando"
  • S. Larsson
  • C.M. Raiteri
  • R. Reinthal
  • V. Ramakrishnan
  • Svetlana G. Jorstad
  • Alan P. Marscher
  • Vishal Bala
  • Nicholas R. MacDonald
  • N. Kaur
  • Sameer D. Sahasrabuddhe
  • K. Baliyan
  • J.A. Acosta-Pulido
  • C. Lazaro
  • C. Martí-Nez-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

Research units

  • Swiss Federal Institute of Technology Zurich
  • University of Udine
  • Kyoto University
  • University of Padova
  • University of Rijeka
  • Saha Institute of Nuclear Physics
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Brazilian Center for Research in Physics
  • Complutense University
  • University of Lódz
  • German Electron Synchrotron
  • Humboldt University of Berlin
  • University of Trieste
  • Autonomous University of Barcelona
  • University of Siena
  • University of Würzburg
  • Swiss Federal Institute of Technology Lausanne
  • Instituto Astrofisico de Canarias
  • University of La Laguna
  • Institute of Space Studies of Catalonia
  • Dortmund University
  • University of Barcelona
  • University of Tokyo
  • Finnish MAGIC Consortium
  • Bulgarian Academy of Sciences
  • Japanese MAGIC Consortium
  • University of Bologna
  • University of Pisa
  • University of Maryland
  • INAF Istituto di Radioastronomia
  • Royal Institute of Technology
  • Boston University
  • St. Petersburg State University
  • Physical Research Laboratory India
  • Indian Institute of Technology
  • Pennsylvania State University
  • Lancaster University
  • Liverpool John Moores University
  • RAS - Pulkovo Astronomical Observatory
  • INAF National Institute for Astrophysics
  • Finnish Centre for Astronomy with ESO, University of Turku
  • AlbaNova
  • INAF—Osservatorio Astrofisico di Torino
  • Crimean Astrophysical Observatory
  • Osservatorio Astronomicodi Roma
  • University of Turku

Abstract

Context. PKS 1510-089 is one of only a few flat spectrum radio quasars detected in the very-high-energy (VHE, > 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 Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes during a long, high gamma-ray state in May 2015. In order to perform broadband modeling 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 was 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, owing 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 those obtained during previous measurements of the source. The observed flux variability sets constraints for the first time 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.

Details

Original languageEnglish
Article numberA29
Number of pages12
JournalAstronomy and Astrophysics
Volume603
Publication statusPublished - 1 Jul 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • Galaxies: active, Galaxies: jets, Gamma rays: galaxies, Quasars: individual: PKS 1510-089

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