Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26884
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sandrinelli, A. | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | Treves, A. | en_US |
dc.contributor.author | Lindfors, E. | en_US |
dc.contributor.author | RAITERI, Claudia Maria | en_US |
dc.contributor.author | Nilsson, K. | en_US |
dc.contributor.author | Takalo, L. O. | en_US |
dc.contributor.author | Reinthal, R. | en_US |
dc.contributor.author | Berdyugin, A. | en_US |
dc.contributor.author | Fallah Ramazani, V. | en_US |
dc.contributor.author | Kadenius, V. | en_US |
dc.contributor.author | Tuominen, T. | en_US |
dc.contributor.author | Kehusmaa, P. | en_US |
dc.contributor.author | Bachev, R. | en_US |
dc.contributor.author | Strigachev, A. | en_US |
dc.date.accessioned | 2020-08-27T12:54:51Z | - |
dc.date.available | 2020-08-27T12:54:51Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26884 | - |
dc.description.abstract | We examine the 2008-2016 γ-ray and optical light curves of three bright BL Lac objects, 0716+714, MRK 421, BL Lac, which exhibit large structured variability. We searched for periodicities by using a fully Bayesian approach. For two out of three sources investigated, no significant periodic variability was found. In the case of BL Lac, we detected a periodicity of 680 days. Although the signal related to this is modest, the coincidence of the periods in both gamma and optical bands is indicative of a physical relevance. Taking into consideration previous literature results, possibly related γ-ray and optical periodicities of about one year time scale are proposed in four bright γ-ray blazars out of the ten examined in detail. Compared with results from periodicity search of optical archives of quasars, the presence of quasi-periodicities in blazars may be more frequent by a large factor. This suggests the intriguing possibility that the basic conditions for their observability are related to the relativistic jet in the observer direction, but the overall picture remains uncertain. | en_US |
dc.language.iso | eng | en_US |
dc.title | Gamma-ray and optical oscillations of 0716+714, MRK 421, and BL Lacertae | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201630288 | en_US |
dc.identifier.scopus | 2-s2.0-85017501641 | en_US |
dc.identifier.isi | 000400754000141 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2017/04/aa30288-16/aa30288-16.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 600 | en_US |
dc.relation.firstpage | A132 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017A&A...600A.132S | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
crisitem.author.orcid | 0000-0003-1784-2784 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
aa30288-16.pdf | pdf editoriale | 803.96 kB | Adobe PDF | View/Open |
Page view(s)
52
checked on Apr 23, 2024
Download(s)
12
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.