Periodicity Analysis of Mrk 501 and Mrk 421 in Gamma Rays

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'Results from different methods searching for Quasi periodic oscillationsrn(QPOs) in blazars will be shown, indicating no significant evidence for periodic signals beyond the noise level. Blazars are a subclass of active galactic nuclei (AGN), and are highly variable objects. QPOs, which might originate from a binary black hole located at the AGN core, have been found in some blazar light curves. For the blazars Mrk 421 and Mrk 501, we test the possible QPO behaviour using a variety of methods (generalized Lomb-Scargle Periodogram, CARMA, Wavepal and A-T plane), studying in detail systematic effects. We use gamma-ray light curves from FACT, a ground-based imaging air Cherenkov telescope and Fermi-LAT, a gamma-ray satellite. Furthermore, we explore the possibility to search for periodicities with the information field theory.'

Roman Iotov | Phillip Arras |  Manuel Boettcher| Thomas Bretz |  Daniela Dorner | Vincent Eberle | Torsten Enßlin   Andrija Kostić |  Michael Kreter | Volodymyr Marchenko | Bernd Schleicher | Mariusz  Tarnopolski | Fabian Theissen |  Natalia Żywucka |  for the FACT  collaboration

Indico-ID: 1390
Proceeding URL: https://pos.sissa.it/395/879