EPJ Web of Conferences
Volume 61, 2013The Innermost Regions of Relativistic Jets and Their Magnetic Fields
|Number of page(s)
|Emission across the electromagnetic spectrum I
|09 December 2013
Prominent outburst of the blazar CTA 102 in 2012
1 Astron. Inst., St.-Petersburg State Univ., Russia
2 Institute for Astrophysical Research, Boston University, MA, USA
3 INAF, Osservatorio Astrofisico di Torino, Italy
4 Instituto de Astrofisíca de Andalucía, CSIC, Granada, Spain
5 Steward Observatory, University of Arizona, Tucson, AZ, USA
6 University of Crete, Heraklion, Greece
7 Current Address: Joint Institute for VLBI in Europe, Dwingeloo, the Netherlands
* e-mail: firstname.lastname@example.org
Published online: 9 December 2013
After a few years of quiescence, the blazar CTA 102 underwent a large outburst in the fall of 2012. The flare has been tracked from γ-rays to near-infrared, including Fermi and Swift data as well as polarimetric data from several observatories. An intensive GASP-WEBT collaboration campaign in optical and NIR bands, with the addition of previously unpublished archival data, allows comparison of this outburst with the previous activity period of this blazar in the early 2000s. We find remarkable similarity between the optical and γ-ray behavior of CTA 102 during the outburst, without any time lag between the two light curves, indicating co-spatiality of the optical and γ-ray emission regions. A strong harder-when-brighter spectral dependence is seen both in γ-rays and optical. The polarimetric behavior of CTA 102 during the outburst conforms with a shock-in-jet interpretation.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.