Galaxies (Nov 2016)

Multiwavelength Picture of the Blazar S5 0716+714 during Its Brightest Outburst

  • Marina Manganaro,
  • Giovanna Pedaletti,
  • Marlene Doert,
  • Denis Bastieri,
  • Vandad Fallah Ramazani,
  • Dario Gasparrini,
  • Elina Lindfors,
  • Benoit Lott,
  • Mireia Nievas,
  • Bindu Rani,
  • David J. Thompson,
  • Emmanouil Angelakis,
  • George Borman,
  • Mark Gurwell,
  • Talvikki Hovatta,
  • Ryosuke Itoh,
  • Svetlana Jorstad,
  • Alex Kraus,
  • Thomas P. Krichbaum,
  • Paul Kuin,
  • Anne Lähteenmäki,
  • Valeri Larionov,
  • Amy Yarleen Lien,
  • Ioannis Myserlis,
  • Merja Tornikoski,
  • Ivan Troitsky,
  • J. Anton Zensus,
  • the MAGIC and -LAT Collaborations

DOI
https://doi.org/10.3390/galaxies4040069
Journal volume & issue
Vol. 4, no. 4
p. 69

Abstract

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S5 0716+714 is a well known BL Lac object, and one of the brightest and most active blazars. The discovery in the Very High Energy band (VHE, E > 100 GeV) by MAGIC happened in 2008. In January 2015, the source went through the brightest optical state ever observed, triggering MAGIC follow-up and a VHE detection with ∼ 13 σ significance (ATel ♯ 6999 ). Rich multiwavelength coverage of the flare allowed us to construct the broad-band spectral energy distribution of S5 0716+714 during its brightest outburst. In this work, we will present the preliminary analysis of MAGIC and Fermi-LAT data of the flaring activity in January and February 2015 for the HE (0.1 < HE < 300 GeV) and VHE band, together with radio (Metsähovi, OVRO, VLBA, Effelsberg), sub-millimeter (SMA), optical (Tuorla, Perkins, Steward, AZT-8+ST7, LX-200, Kanata), X-ray and UV (Swift-XRT and UVOT), in the same time-window and discuss the time variability of the multiwavelength light curves during this impressive outburst.

Keywords