Document Detail

An intermediate-mass black hole of over 500 solar masses in the galaxy ESO 243-49.
MedLine Citation:
PMID:  19571880     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Ultraluminous X-ray sources are extragalactic objects located outside the nucleus of the host galaxy with bolometric luminosities exceeding 10(39) erg s(-1). These extreme luminosities-if the emission is isotropic and below the theoretical (Eddington) limit, where the radiation pressure is balanced by the gravitational pressure-imply the presence of an accreting black hole with a mass of approximately 10(2)-10(5) solar masses (M[symbol: see text]). The existence of such intermediate-mass black holes is in dispute, and though many candidates have been proposed, none are widely accepted as definitive. Here we report the detection of a variable X-ray source with a maximum 0.2-10 keV luminosity of up to 1.1 x 10(42) erg s(-1) in the edge-on spiral galaxy ESO 243-49, with an implied conservative lower limit for the mass of the black hole of approximately 500M[symbol: see text].
Sean A Farrell; Natalie A Webb; Didier Barret; Olivier Godet; Joana M Rodrigues
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Nature     Volume:  460     ISSN:  1476-4687     ISO Abbreviation:  Nature     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-02     Completed Date:  2009-08-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410462     Medline TA:  Nature     Country:  England    
Other Details:
Languages:  eng     Pagination:  73-5     Citation Subset:  -    
Université de Toulouse, UPS, CESR, 9 Avenue du Colonel Roche, F-31028 Toulouse Cedex 9, France.
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