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  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27058
Title: Quasi-Periodicities at Year Time Scales in Blazars
Authors: COVINO, Stefano 
SANDRINELLI, ANGELA
Treves, Aldo
Issue Date: 2017
Volume: New Frontiers in Black Hole Astrophysics
Editors: Gomboc, Andreja
Series: PROCEEDINGS OF THE INTERNATIONAL ASTRONOMICAL UNION 
Number: vol. 12, S324
First Page: 180
Abstract: We examine the 2008-2016 gamma-ray and optical light curves of a number of bright Fermi blazars. In a fraction of them, the periodograms show possible evidence of quasi-periodicities related in the two bands. This coincidence strengthens their physical meaning. Comparing with results from the periodicity search of quasars, the presence of quasi-periodicities in blazars suggests that the basic condition for its observability is related to the relativistic jet in the observer direction, but the overall picture remains uncertain.
Conference Name: New Frontiers in Black Hole Astrophysics
Conference Place: Ljubljana, Slovenia
Conference Date: 12-16 September, 2016
URI: http://hdl.handle.net/20.500.12386/27058
URL: https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/quasiperiodicities-at-year-time-scales-in-blazars/6DF450CDA106DAB07A72EB7F7D5C1748
ISSN: 1743-9213
ISBN: 978-1-107-16994-4
DOI: 10.1017/S174392131700237X
Bibcode ADS: 2017IAUS..324..180C
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

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