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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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| File | Description | Size | Format | |
|---|---|---|---|---|
| quasiperiodicities_at_year_time_scales_in_blazars.pdf | Pdf editoriale | 285.68 kB | Adobe PDF | View/Open |
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