6533b860fe1ef96bd12c3c09
RESEARCH PRODUCT
Insights into the particle acceleration of a peculiar gamma -ray radio galaxy IC 310
J. SitarekD. Eisenacher GlawionK. MannheimP. ColinM. KadlerR. SchultzF. KraußE. RosU. BachJ. Wilmssubject
High Energy Astrophysical Phenomena (astro-ph.HE)Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaAstrophysics::Galaxy Astrophysicsdescription
IC 310 has recently been identified as a gamma-ray emitter based on observations at GeV energies with Fermi-LAT and at very high energies (VHE, E > 100 GeV) with the MAGIC telescopes. Despite IC 310 having been classified as a radio galaxy with the jet observed at an angle > 10 degrees, it exhibits a mixture of multiwavelength properties of a radio galaxy and a blazar, possibly making it a transitional object. On the night of 12/13th of November 2012 the MAGIC telescopes observed a series of violent outbursts from the direction of IC 310 with flux-doubling time scales faster than 5 min and a peculiar spectrum spreading over 2 orders of magnitude. Such fast variability constrains the size of the emission region to be smaller than 20% of the gravitational radius of its central black hole, challenging the shock acceleration models, commonly used in explanation of gamma-ray radiation from active galaxies. Here we will show that this emission can be associated with pulsar-like particle acceleration by the electric field across a magnetospheric gap at the base of the jet.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-02-04 |