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dc.contributor.authorMiddleton, M.J.
dc.contributor.authorWalton, D.J.
dc.contributor.authorAlston, W.
dc.contributor.authorDauser, T.
dc.contributor.authorEikenberry, S.
dc.contributor.authorJiang, Y.F.
dc.contributor.authorFabian, A.C.
dc.contributor.authorFuerst, F.
dc.contributor.authorBrightman, M.
dc.contributor.authorMarshall, H.
dc.contributor.authorParker, M.
dc.contributor.authorPinto, C.
dc.contributor.authorHarrison, F.A.
dc.contributor.authorBachetti, M.
dc.contributor.authorAltamirano, D.
dc.contributor.authorBird, A.J.
dc.contributor.authorPerez, G.
dc.contributor.authorMiller-Jones, James
dc.contributor.authorCharles, P.
dc.contributor.authorBoggs, S.
dc.contributor.authorChristensen, F.
dc.contributor.authorCraig, W.
dc.contributor.authorForster, K.
dc.contributor.authorGrefenstette, B.
dc.contributor.authorHailey, C.
dc.contributor.authorMadsen, K.
dc.contributor.authorStern, D.
dc.contributor.authorZhang, W.
dc.date.accessioned2023-01-12T13:54:16Z
dc.date.available2023-01-12T13:54:16Z
dc.date.issued2021
dc.identifier.citationMiddleton, M.J. and Walton, D.J. and Alston, W. and Dauser, T. and Eikenberry, S. and Jiang, Y.F. and Fabian, A.C. et al. 2021. NuSTAR reveals the hidden nature of SS433. Monthly Notices of the Royal Astronomical Society. 506 (1): pp. 1045-1058.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/90029
dc.identifier.doi10.1093/mnras/stab1280
dc.description.abstract

SS433 is the only Galactic binary system known to persistently accrete at highly super-critical (or hyper-critical) rates, similar to those in tidal disruption events, and likely needed to explain the rapid growth of those very high redshift quasars containing massive SMBHs. Probing the inner regions of SS433 in the X-rays is crucial to understanding this system, and super-critical accretion in general, but is highly challenging due to obscuration by the surrounding wind, driven from the accretion flow. NuSTAR observed SS433 in the hard X-ray band across multiple phases of its 162 d superorbital precession period. Spectral-timing tools allow us to infer that the hard X-ray emission from the inner regions is likely being scattered towards us by the walls of the wind-cone. By comparing to numerical models, we determine an intrinsic X-ray luminosity of ≥ 2 × 1037 erg s-1 and that, if viewed face on, we would infer an apparent luminosity of >1 × 1039 erg s-1, confirming SS433's long-suspected nature as an ultraluminous X-ray source (ULX). We present the discovery of a narrow, ∼100 s lag due to atomic processes occurring in outflowing material travelling at least 0.14-0.29c, which matches absorption lines seen in ULXs and - in the future - will allow us to map a super-critical outflow for the first time.

dc.languageEnglish
dc.publisherOXFORD UNIV PRESS
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP200102471
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectAstronomy & Astrophysics
dc.subjectaccretion, accretion discs
dc.subjectX-rays: binaries
dc.subjectX-RAY SOURCES
dc.subjectSUPER-EDDINGTON ACCRETION
dc.subjectBLACK-HOLE
dc.subjectSS 433
dc.subjectINTEGRAL OBSERVATIONS
dc.subjectULTRAFAST OUTFLOW
dc.subjectTIDAL DISRUPTION
dc.subjectFAST VARIABILITY
dc.subjectSS-433
dc.subjectEMISSION
dc.titleNuSTAR reveals the hidden nature of SS433
dc.typeJournal Article
dcterms.source.volume506
dcterms.source.number1
dcterms.source.startPage1045
dcterms.source.endPage1058
dcterms.source.issn0035-8711
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
dc.date.updated2023-01-12T13:54:15Z
curtin.departmentSchool of Elec Eng, Comp and Math Sci (EECMS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidMiller-Jones, James [0000-0003-3124-2814]
curtin.contributor.researcheridMiller-Jones, James [B-2411-2013]
dcterms.source.eissn1365-2966
curtin.contributor.scopusauthoridMiller-Jones, James [10044231400]


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