Show simple item record

dc.contributor.authorChomiuk, L.
dc.contributor.authorStrader, J.
dc.contributor.authorMaccarone, T.
dc.contributor.authorMiller-Jones, James
dc.contributor.authorHeinke, C.
dc.contributor.authorNoyola, E.
dc.contributor.authorSeth, A.
dc.contributor.authorRansom, S.
dc.date.accessioned2017-01-30T10:40:52Z
dc.date.available2017-01-30T10:40:52Z
dc.date.created2013-10-22T20:00:38Z
dc.date.issued2013
dc.identifier.citationChomiuk, Laura and Strader, Jay and Maccarone, Thomas J. and Miller-Jones, James C.A. and Heinke, Craig and Noyola, Eva and Seth, Anil C. and Ransom, Scott. 2013. A Radio-selected Black Hole X-Ray Binary Candidate in the Milky Way Globular Cluster M62. The Astrophysical Journal. 777 (1): pp. 69:1-69:9.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/4669
dc.identifier.doi10.1088/0004-637X/777/1/69
dc.description.abstract

We report the discovery of a candidate stellar-mass black hole in the Milky Way globular cluster M62. We detected the black hole candidate, which we call M62-VLA1, in the core of the cluster using deep radio continuum imaging from the Karl G. Jansky Very Large Array. M62-VLA1 is a faint source with a flux density of 18.7 ± 1.9 μJy at 6.2 GHz and a flat radio spectrum (α = –0.24 ± 0.42, for S ν = να). M62 is the second Milky Way cluster with a candidate stellar-mass black hole; unlike the two candidate black holes previously found in the cluster M22, M62-VLA1 is associated with a Chandra X-ray source, supporting its identification as a black hole X-ray binary. Measurements of its radio and X-ray luminosity, while not simultaneous, place M62-VLA1 squarely on the well-established radio-X-ray correlation for stellar-mass black holes. In archival Hubble Space Telescope imaging, M62-VLA1 is coincident with a star near the lower red giant branch. This possible optical counterpart shows a blue excess, Hα emission, and optical variability. The radio, X-ray, and optical properties of M62-VLA1 are very similar to those for V404 Cyg, one of the best-studied quiescent stellar-mass black holes. We cannot yet rule out alternative scenarios for the radio source, such as a flaring neutron star or background galaxy; future observations are necessary to determine whether M62-VLA1 is indeed an accreting stellar-mass black hole.

dc.publisherInstitute of Physics Publishing, Inc.
dc.subjectradio continuum: general
dc.subjectX-rays: general
dc.subjectglobular clusters: individual: M62
dc.subjectblack hole physics
dc.titleA Radio-selected Black Hole X-Ray Binary Candidate in the Milky Way Globular Cluster M62
dc.typeJournal Article
dcterms.source.volume777
dcterms.source.number1
dcterms.source.startPage69:1
dcterms.source.endPage69:9
dcterms.source.issn0004637X
dcterms.source.titleThe Astrophysical Journal
curtin.note

© 2013. The American Astronomical Society. All rights reserved.

curtin.department
curtin.accessStatusOpen access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record