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dc.contributor.authorRodriguez, J.
dc.contributor.authorUrquhart, R.
dc.contributor.authorPlotkin, Richard
dc.contributor.authorPanurach, T.
dc.contributor.authorChomiuk, L.
dc.contributor.authorStrader, J.
dc.contributor.authorMiller-Jones, James
dc.contributor.authorGallo, E.
dc.contributor.authorSivakoff, G.R.
dc.date.accessioned2020-07-22T13:38:10Z
dc.date.available2020-07-22T13:38:10Z
dc.date.issued2020
dc.identifier.citationRodriguez, J. and Urquhart, R. and Plotkin, R.M. and Panurach, T. and Chomiuk, L. and Strader, J. and Miller-Jones, J.C.A. et al. 2020. GS 2000+25: The Least Luminous Black Hole X-Ray Binary. Astrophysical Journal. 889 (1): Article No. 58.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/80166
dc.identifier.doi10.3847/1538-4357/ab5db5
dc.description.abstract

© 2020. The American Astronomical Society. All rights reserved.. Little is known about the properties of the accretion flows and jets of the lowest-luminosity quiescent black holes. We report new, strictly simultaneous radio and X-ray observations of the nearby stellar-mass black hole X-ray binary GS 2000+25 in its quiescent state. In deep Chandra observations we detect the system at a faint X-ray luminosity of erg s-1 (1-10 keV). This is the lowest X-ray luminosity yet observed for a quiescent black hole X-ray binary, corresponding to an Eddington ratio L X/L Edd ∼ 10-9. In 15 hours of observations with the Karl G. Jansky Very Large Array, no radio continuum emission is detected to a 3σ limit of <2.8 μJy at 6 GHz. Including GS 2000+25, four quiescent stellar-mass black holes with L X < 1032 erg s-1 have deep simultaneous radio and X-ray observations and known distances. These sources all have radio to X-ray luminosity ratios generally consistent with, but slightly lower than, the low-state radio/X-ray correlation for stellar-mass black holes with L X > 1032 erg s-1. Observations of these sources tax the limits of our current X-ray and radio facilities, and new routes to black hole discovery are needed to study the lowest-luminosity black holes.

dc.languageEnglish
dc.publisherIOP PUBLISHING LTD
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/FT140101082
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectAstronomy & Astrophysics
dc.subjectQUIESCENT STATE
dc.subjectHARD STATE
dc.subjectNOVA
dc.subjectMASS
dc.subjectLIMITS
dc.titleGS 2000+25: The Least Luminous Black Hole X-Ray Binary
dc.typeJournal Article
dcterms.source.volume889
dcterms.source.number1
dcterms.source.issn0004-637X
dcterms.source.titleAstrophysical Journal
dc.date.updated2020-07-22T13:38:09Z
curtin.note

Copyright © 2020 The American Astronomical Society. All rights reserved.

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]
curtin.identifier.article-numberARTN 58
dcterms.source.eissn1538-4357
curtin.contributor.scopusauthoridMiller-Jones, James [10044231400]
curtin.contributor.scopusauthoridPlotkin, Richard [13205184900]


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