학술논문
Long-term multi-band photometric monitoring of Mrk 501
Document Type
Working Paper
Author
Arbet-Engels, Axel; Baack, Dominik; Balbo, Matteo; Biland, Adrian; Bretz, Thomas; Buss, Jens; Dorner, Daniela; Eisenberger, Laura; Elsaesser, Dominik; Hildebrand, Dorothee; Iotov, Roman; Kalenski, Adelina; Mannheim, Karl; Mitchell, Alison; Neise, Dominik; Noethe, Maximilian; Paravac, Aleksander; Rhode, Wolfgang; Schleicher, Bernd; Sliusar, Vitalii; Walter, Roland
Source
A&A 655, A93 (2021)
Subject
Language
Abstract
Radio-to-TeV observations of the bright nearby (z=0.034) blazar Markarian 501 (Mrk 501), performed from December 2012 to April 2018, are used to study the emission mechanisms in its relativistic jet. We examined the multi-wavelength variability and the correlations of the light curves obtained by eight different instruments, including the First G-APD Cherenkov Telescope (FACT), observing Mrk 501 in very high-energy (VHE) gamma-rays at TeV energies. We identified individual TeV and X-ray flares and found a sub-day lag between variability in these two bands. Simultaneous TeV and X-ray variations with almost zero lag are consistent with synchrotron self-Compton (SSC) emission, where TeV photons are produced through inverse Compton scattering. The characteristic time interval of 5-25 days between TeV flares is consistent with them being driven by Lense-Thirring precession.
Comment: 10 pages, 11 figures, Astronomy and astrophysics pre-print. arXiv admin note: text overlap with arXiv:2101.10651
Comment: 10 pages, 11 figures, Astronomy and astrophysics pre-print. arXiv admin note: text overlap with arXiv:2101.10651