Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27843
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Holgado, A. Miguel | en_US |
dc.contributor.author | SESANA, ALBERTO | en_US |
dc.contributor.author | SANDRINELLI, ANGELA | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | Treves, Aldo | en_US |
dc.contributor.author | Liu, Xin | en_US |
dc.contributor.author | Ricker, Paul | en_US |
dc.date.accessioned | 2020-10-15T13:23:44Z | - |
dc.date.available | 2020-10-15T13:23:44Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27843 | - |
dc.description.abstract | Blazars are a subpopulation of quasars whose jets are nearly aligned with the line of sight, which tend to exhibit multiwavelength variability on a variety of time-scales. Quasi-periodic variability on year-like time-scales has been detected in a number of bright sources, and has been connected to the orbital motion of a putative massive black hole binary. If this were indeed the case, those blazar binaries would contribute to the nanohertz gravitational-wave stochastic background. We test the binary hypothesis for the blazar population observed by the Fermi Gamma-Ray Space Telescope, which consists of BL Lacertae objects and flat-spectrum radio quasars. Using mock populations informed by the luminosity functions for BL Lacertae objects and flat-spectrum radio quasars with redshifts z ≤ 2, we calculate the expected gravitational-wave background and compare it to recent pulsar timing array upper limits. The two are consistent only if a fraction ≲10<SUP>-3</SUP> of blazars hosts a binary with orbital periods <5 yr. We therefore conclude that binarity cannot significantly explain year-like quasi-periodicity in blazars. | en_US |
dc.language.iso | eng | en_US |
dc.title | Pulsar timing constraints on the Fermi massive black hole binary blazar population | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnrasl/sly158 | en_US |
dc.identifier.scopus | 2-s2.0-85054082502 | en_US |
dc.identifier.isi | 000451569100016 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article/481/1/L74/5087664 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 481 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L74 | 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 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018MNRAS.481L..74H | 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_13 Gravitational astronomy | 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.orcid | 0000-0001-9078-5507 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
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sly158.pdf | PDF editoriale | 427.48 kB | Adobe PDF | View/Open |
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