Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24529
Titolo: | Quasi-periodicities at Year-like Timescales in Blazars | Autori: | Sandrinelli, A. COVINO, Stefano Dotti, M. Treves, A. |
Data pubblicazione: | 2016 | Rivista: | THE ASTRONOMICAL JOURNAL | Numero: | 151 | Fascicolo: | 3 | Da pagina:: | 54 | Abstract: | We searched for quasi-periodicities on year-like timescales in the light curves of six blazars in the optical—near-infrared bands and we made a comparison with the high energy emission. We obtained optical/NIR light curves from Rapid Eye Mounting photometry plus archival Small & Moderate Aperture Research Telescope System data and we accessed the Fermi light curves for the γ-ray data. The periodograms often show strong peaks in the optical and γ-ray bands, which in some cases may be inter-related. The significance of the revealed peaks is then discussed, taking into account that the noise is frequency dependent. Quasi-periodicities on a year-like timescale appear to occur often in blazars. No straightforward model describing these possible periodicities is yet available, but some plausible interpretations for the physical mechanisms causing periodic variabilities of these sources are examined. | URI: | http://hdl.handle.net/20.500.12386/24529 | URL: | https://iopscience.iop.org/article/10.3847/0004-6256/151/3/54 | ISSN: | 0004-6256 | DOI: | 10.3847/0004-6256/151/3/54 | Bibcode ADS: | 2016AJ....151...54S | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
Sandrinelli_2016_AJ_151_54.pdf | pdf editoriale | 1.08 MB | Adobe PDF | Visualizza/apri |
Page view(s)
45
controllato il 25-apr-2024
Download(s)
14
controllato il 25-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.