Show simple item record

dc.contributor.authorSaade, M. Lynne
dc.contributor.authorBrightman, Murray
dc.contributor.authorStern, Daniel
dc.contributor.authorConnor, Thomas
dc.contributor.authorDjorgovski, S. G.
dc.contributor.authorD’Orazio, Daniel J.
dc.contributor.authorFord, K. E. S.
dc.contributor.authorGraham, Matthew J.
dc.contributor.authorHaiman, Zoltán
dc.contributor.authorJun, Hyunsung D.
dc.contributor.authorKammoun, Elias
dc.contributor.authorKraft, Ralph P.
dc.contributor.authorMcKernan, Barry
dc.contributor.authorVikhlinin, Alexei
dc.contributor.authorWalton, Dominic J.
dc.date.accessioned2024-04-30T23:13:04Z
dc.date.available2024-04-30T23:13:04Z
dc.date.issued2024-05-01
dc.identifier.citationSaade , M L , Brightman , M , Stern , D , Connor , T , Djorgovski , S G , D’Orazio , D J , Ford , K E S , Graham , M J , Haiman , Z , Jun , H D , Kammoun , E , Kraft , R P , McKernan , B , Vikhlinin , A & Walton , D J 2024 , ' NuSTAR Observations of Candidate Subparsec Binary Supermassive Black Holes ' , The Astrophysical Journal , vol. 966 , no. 1 , 104 , pp. 1-10 . https://doi.org/10.3847/1538-4357/ad372e
dc.identifier.issn0004-637X
dc.identifier.otherJisc: 1929662
dc.identifier.otherpublisher-id: apjad372e
dc.identifier.othermanuscript: ad372e
dc.identifier.otherother: aas46174
dc.identifier.otherORCID: /0000-0001-5819-3552/work/158960619
dc.identifier.urihttp://hdl.handle.net/2299/27818
dc.description© 2024 The Author(s). Published by the American Astronomical Society. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
dc.description.abstractWe present an analysis of NuSTAR X-ray observations of three active galactic nuclei (AGN) that were identified as candidate subparsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey based on apparent periodicity in their optical light curves. Simulations predict that close-separation accreting SMBH binaries will have different X-ray spectra than single accreting SMBHs. We previously observed these AGN with Chandra and found no differences between their low-energy X-ray properties and the larger AGN population. However, some models predict differences to be more prominent at energies higher than probed by Chandra. We find that even at the higher energies probed by NuSTAR, the spectra of these AGN are indistinguishable from the larger AGN population. This could rule out models predicting large differences in the X-ray spectra in the NuSTAR bands. Alternatively, it might mean that these three AGN are not binary SMBHs.en
dc.format.extent10
dc.format.extent708827
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectX-ray active galactic nuclei
dc.subjectSeyfert galaxies
dc.subjectSupermassive black holes
dc.subjectQuasars
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleNuSTAR Observations of Candidate Subparsec Binary Supermassive Black Holesen
dc.contributor.institutionCentre for Astrophysics Research (CAR)
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85192187465&partnerID=8YFLogxK
rioxxterms.versionofrecord10.3847/1538-4357/ad372e
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record