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dc.creatorWrobel, J. M.en_US
dc.creatorGreene, J. E.en_US
dc.creatorHo, L. C.en_US
dc.date.accessioned2016-04-22T19:47:47Z
dc.date.available2016-04-22T19:47:47Z
dc.date.issued2011-10en
dc.identifierdoi:10.15781/T2WF8N
dc.identifier.citationWrobel, J. M., J. E. Greene, and L. C. Ho. >The candidate intermediate-mass black hole in the globular cluster M54.> The Astronomical Journal Vol. 142, No. 4 (Oct., 2011): 113.en_US
dc.identifier.issn0004-6256en_US
dc.identifier.urihttp://hdl.handle.net/2152/34510
dc.description.abstractIbata et al. reported evidence for density and kinematic cusps in the Galactic globular cluster M54, possibly due to the presence of a 9400 M-circle dot black hole. Radiative signatures of accretion onto M54's candidate intermediate-mass black hole (IMBH) could bolster the case for its existence. Analysis of new Chandra and recent Hubble Space Telescope astrometry rules out the X-ray counterpart to the candidate IMBH suggested by Ibata et al. If an IMBH exists in M54, then it has an Eddington ratio of L(0.3-8 keV)/L(Edd) < 1.4 x 10(-10), more similar to that of the candidate IMBH in M15 than that in G1. From new imaging with the NRAO Very Large Array, the luminosity of the candidate IMBH is L(8.5 GHz) < 3.6 x 10(29) erg s(-1) (3 sigma). Two background active galaxies discovered toward M54 could serve as probes of its intracluster medium.en_US
dc.language.isoEnglishen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectblack hole physicsen_US
dc.subjectglobular clusters: individual (m54)en_US
dc.subjectradioen_US
dc.subjectcontinuum: generalen_US
dc.subjectx-rays: generalen_US
dc.subjectdwarf spheroidal galaxyen_US
dc.subjectradio observationsen_US
dc.subjectfundamental planeen_US
dc.subjectlargeen_US
dc.subjectarrayen_US
dc.subjectacs surveyen_US
dc.subjectsagittariusen_US
dc.subjectg1en_US
dc.subjectemissionen_US
dc.subjectchandraen_US
dc.subjectlimitsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Candidate Intermediate-Mass Black Hole In The Globular Cluster M54en_US
dc.typeArticleen_US
dc.description.departmentAstronomyen_US
dc.identifier.doi10.1088/0004-6256/142/4/113en_US
dc.contributor.utaustinauthorGreene, J. E.en_US
dc.relation.ispartofserialAstronomical Journalen_US


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