July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Black Hole Lightning from the Peculiar Gamma-Ray AGN IC 310

Jul 31, 2015, 3:00 PM
15m
Mississippi (World Forum)

Mississippi

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution GA-EX Parallel GA07 MAGIC

Speaker

Dorit Glawion

Description

The nearby active galaxy IC 310, located in the outskirts of the Perseus cluster of galaxies is a bright and variable multi-wavelength emitter from the radio regime up to very high gamma-ray energies above 100 GeV. Originally, the nucleus of IC 310 has been classified as a radio galaxy. However, studies of the multi-wavelength emission showed several properties similar to those of blazars as well as radio galaxies. In late 2012, we have organized the first contemporaneous multi-wavelength campaign including radio, optical, X-ray and gamma-ray instruments. During this campaign an exceptionally bright flare of IC 310 was detected with the MAGIC telescopes in November 2012 reaching an averaged flux level in the night of up to one Crab above 1 TeV with a hard spectrum over two decades in energy. The intra-night light curve showed a series of strong outbursts with flux-doubling time scales as fast as a few minutes. The fast variability constrains the size of the gamma-ray emission regime to be smaller than 20% of the gravitational radius of its central black hole. This challenges the shock acceleration models, commonly used in explanation of gamma-ray radiation from active galaxies. Here, we will present more details on the MAGIC data and discuss several possible alternative emission models.
Collaboration MAGIC
Registration number following "ICRC2015-I/" 221

Primary author

Co-authors

Eduardo Ros (Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany, Observatori Astronòmic & Departament d’Astronomia i Astrofísica, Universitat de València, 46071 València, Spain) Felicia Krauß (Dr. Remeis Sternwarte & ECAP, Universität Erlangen-Nürnberg, Sternwartstr. 7, 96049 Bamberg, Germany, Lehrstuhl für Astronomie, Universität Würzburg, Campus Hubland Nord, Emil-Fischer-Strasse 31, 97074 Würzburg, Germany) Julian Sitarek (Division of Astrophysics, University of Lodz, Lodz, Poland) Jörn Wilms (Dr. Remeis Sternwarte & ECAP, Universität Erlangen-Nürnberg, Sternwartstr. 7, 96049 Bamberg, Germany) Karl Mannheim (Institut für Theoretische Physik und Astrophysik - Fakultät für Physik und Astronomie - Universität Würzburg, Würzburg, Germany) Matthias Kadler (Institut für Theoretische Physik und Astrophysik - Fakultät für Physik und Astronomie - Universität Würzburg, Würzburg, Germany) Pierre Colin (MPI fuer Physik) Robert Schulz (Institut für Theoretische Physik und Astrophysik - Fakultät für Physik und Astronomie - Universität Würzburg, Würzburg, Germany, Dr. Remeis Sternwarte & ECAP, Universität Erlangen-Nürnberg, Sternwartstr. 7, 96049 Bamberg, Germany) Uwe Bach (Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany)

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