Galaxies
(Nov 2017)
Behaviour of the Blazar CTA 102 during Two Giant Outbursts
Valeri M. Larionov,
Svetlana G. Jorstad,
Alan P. Marscher,
Paul S. Smith,
Sergey Savchenko,
Daria Morozova,
Tatiana Grishina,
Evgenia Kopatskaya,
Liudmila Larionova,
Elena Larionova,
Anna Mokrushina,
Ivan Troitsky,
Yulia Troitskaya,
George Borman
Affiliations
Valeri M. Larionov
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Svetlana G. Jorstad
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Alan P. Marscher
Institute for Astrophysical Research, Boston University, Boston, MA 02215, USA
Paul S. Smith
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Sergey Savchenko
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Daria Morozova
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Tatiana Grishina
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Evgenia Kopatskaya
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Liudmila Larionova
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Elena Larionova
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Anna Mokrushina
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Ivan Troitsky
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
Yulia Troitskaya
Astronomical Institute, Saint Petersburg State University, 198504 Saint Petersburg, Russia
George Borman
Crimean Astrophysical Observatory, Nauchny, Crimea 298409, Russia
DOI
https://doi.org/10.3390/galaxies5040091
Journal volume & issue
Vol. 5,
no. 4
Abstract
Read online
Blazar CTA 102 underwent exceptional optical and high-energy outbursts in 2012 and 2016–2017. We analyze its behaviour during these events, focusing on polarimetry as a tool that allows us to trace changes in the physical conditions and geometric configuration of the emission source close to the central black hole. We also use Fermi γ -ray data in conjunction with optical photometry in an effort to localize the origin of the outbursts.
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