Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/31338
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | SERAFINELLI, ROBERTO | en_US |
dc.contributor.author | SEVERGNINI, Paola | en_US |
dc.contributor.author | BRAITO, Valentina | en_US |
dc.contributor.author | DELLA CECA, Roberto | en_US |
dc.contributor.author | Vignali, C | en_US |
dc.contributor.author | AMBROSINO, Filippo | en_US |
dc.contributor.author | CICONE, CLAUDIA | en_US |
dc.contributor.author | Zaino, A | en_US |
dc.contributor.author | Dotti, M | en_US |
dc.contributor.author | Sesana, A | en_US |
dc.contributor.author | Gianolli, VE | en_US |
dc.contributor.author | Ballo, L | en_US |
dc.contributor.author | LA PAROLA, VALENTINA | en_US |
dc.contributor.author | Matzeu, GA | en_US |
dc.date.accessioned | 2022-01-21T14:35:54Z | - |
dc.date.available | 2022-01-21T14:35:54Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31338 | - |
dc.description.abstract | The elusive supermassive black hole binaries (SMBHBs) are thought to be the penultimate stage of galaxy mergers, preceding a final coalescence phase. SMBHBs are sources of continuous gravitational waves, possibly detectable by pulsar timing arrays; the identification of candidates could help in performing targeted gravitational wave searches. Due to SMBHBs’ origin in the innermost parts of active galactic nuclei (AGN), X-rays are a promising tool for unveiling their presence, by means of either double Fe Kα emission lines or periodicity in their light curve. Here we report on a new method for selecting SMBHBs by means of the presence of a periodic signal in their Swift Burst Alert Telescope (BAT) 105 month light curves. Our technique is based on Fisher’s exact g-test and takes into account the possible presence of colored noise. Among the 553 AGN selected for our investigation, only the Seyfert 1.5 galaxy Mrk 915 emerges as a candidate SMBHB; from subsequent analysis of its light curve we find a period P0 = 35 ± 2 months, and the null hypothesis is rejected at the 3.7σ confidence level. We also present a detailed analysis of the BAT light curve of the only previously X-ray-selected binary candidate source in the literature, the Seyfert 2 galaxy MCG+11-11-032. We find P0 = 26.3 ± 0.6 months, consistent with the one inferred from previously reported double Fe Kα emission lines. | en_US |
dc.language.iso | eng | en_US |
dc.title | Unveiling Sub-pc Supermassive Black Hole Binary Candidates in Active Galactic Nuclei | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/abb3c3 | en_US |
dc.identifier.scopus | 2-s2.0-85092643873 | en_US |
dc.identifier.isi | WOS:000576071100001 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/abb3c3 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85092643873 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 902 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 10 | en_US |
dc.relation.numberofpages | 11 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020ApJ...902...10S | 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. Roma | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | IASF Palermo | - |
crisitem.author.orcid | 0000-0003-1200-5071 | - |
crisitem.author.orcid | 0000-0001-5619-5896 | - |
crisitem.author.orcid | 0000-0002-2629-4989 | - |
crisitem.author.orcid | 0000-0001-7551-2252 | - |
crisitem.author.orcid | 0000-0001-7915-996X | - |
crisitem.author.orcid | 0000-0003-0522-6941 | - |
crisitem.author.orcid | 0000-0002-8087-6488 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
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Serafinelli_2020_ApJ.pdf | postprint | 794.91 kB | Adobe PDF | Visualizza/apri |
Serafinelli_2020_ApJ_902_10.pdf | [Administrators only] | 1.05 MB | Adobe PDF |
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