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 (1) , 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

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

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.

Mots clés: BL Lacertae objects: individual: S5 0716+714; Galaxies: active; gamma-rays: galaxies

Domaines: Astrophysique [astro-ph]

Marina Manganaro, Giovanna Pedaletti, Marlene Doert, Denis Bastieri, Vandad Fallah Ramazani, et al.. Multiwavelength Picture of the Blazar S5 0716+714 during Its Brightest Outburst. Blazars through Sharp Multi-wavelength Eyes, May 2016, Malaga, Spain. pp.69, ⟨10.3390/galaxies4040069⟩. ⟨hal-01584638⟩