Speaker
Susumu Inoue
(Institute for Cosmic Ray Research, University of Tokyo)
Description
There is mounting evidence for the widespread existence of ultra-fast outflows in active galactic nuclei, which are powerful outflows of baryonic material approaching mildly relativistic velocities, observed as variable, blue-shifted X-ray absorption lines of ionized heavy elements. Occurring in both radio-loud and radio-quiet objects, they are plausibly interpreted as winds driven by the accretion disk, and their interaction with their environment may be the key cause of known correlations between the properties of supermassive black holes and their host galaxies. In such outflows, collisionless shocks are likely to form at different locations, either external shocks due to interaction with the ambient medium, or internal shocks due to inhomogeneities within the flow. We discuss the possibility of acceleration of electrons and hadrons at such shocks, including that of ultra-high-energy cosmic rays. Expectations for the consequent nonthermal emission from the radio band up to high-energy gamma-rays are also presented, and compared with existing data on selected objects of interest, such as ESO 323-G77 and 3C 120. Prospects for further observations with current and future instruments are addressed.
| Registration number following "ICRC2015-I/" | 249 |
|---|---|
| Collaboration | -- not specified -- |
Primary author
Susumu Inoue
(Institute for Cosmic Ray Research, University of Tokyo)
Co-authors
Dr
Kohta Murase
(Institute for Advanced Study, Princeton)
Mr
Ruo-Yu Liu
(Max Planck Institute for Nuclear Physics)
