The black hole candidate XTE J1752âˆ’223 towards and in quiescence: optical and simultaneous X-ray-radio observations

E. M Ratti; P. G Jonker; J. C. A Miller-Jones; M. A. P Torres; J Homan; S Markoff; J. A Tomsick; P Kaaret; R Wijnands; E Gallo; F Özel; D. T. H Steeghs; R. P Fender

doi:10.1111/j.1365-2966.2012.21071.x

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The black hole candidate XTE J1752âˆ’223 towards and in quiescence: optical and simultaneous X-ray-radio observations

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The black hole candidate XTE J1752âˆ’223 towards and in quiescence: optical and simultaneous X-ray-radio observations

E. M Ratti, P. G Jonker, J. C. A Miller-Jones, M. A. P Torres, J Homan, S Markoff, J. A Tomsick, P Kaaret, R Wijnands, E Gallo, …

Monthly notices of the Royal Astronomical Society, Vol.423(3), pp.2656-2667

01/2012

DOI: 10.1111/j.1365-2966.2012.21071.x

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Abstract

We present optical, X-ray and radio observations of the black hole transient (BHT) XTE J1752−223 towards and in quiescence. Optical photometry shows that the quiescent magnitude of XTE J1752−223 is fainter than 24.4 mag in the i′ band. A comparison with measurements of the source during its 2009-2010 outburst shows that the outburst amplitude is more than 8 mag in the i′ band. Known X-ray properties of the source combined with the faintness of the quiescence optical counterpart and the large outburst optical amplitude point towards a short orbital-period system (P orb≲ 6.8 h) with an M type (or later) mass donor, at a distance of 3.5 ≲d≲ 8 kpc. Simultaneous X-ray and radio data were collected with Chandra and the Expanded Very Large Array (EVLA), allowing constraints to be placed on the quiescent X-ray and radio flux of XTE J1752−223. Furthermore, using data covering the final stage of the outburst decay, we investigated the low-luminosity end of the X-ray-radio correlation for this source and compared it with other BHTs. We found that XTE J1752−223 adds to the number of outliers with respect to the 'standard' X-ray-radio luminosity relation. Furthermore, XTE J1752−223 is the second source, after the BHT H1743−322, that shows a transition from the region of the outliers towards the 'standard' correlation at low luminosity. Finally, we report on a faint, variable X-ray source we discovered with Chandra at an angular distance of ∼2.9 arcsec to XTE J1752−223 and at a position angle consistent with that of the radio jets previously observed from the BHT. We discuss the possibility that we detected X-ray emission associated with a jet from XTE J1752−223.

binaries: general

stars: individual: XTE J1752−223

X-rays: binaries

accretion, accretion discs

Details

Title: Subtitle: The black hole candidate XTE J1752âˆ’223 towards and in quiescence: optical and simultaneous X-ray-radio observations
Creators: E. M Ratti - Space Research Organisation Netherlands
P. G Jonker - Space Research Organisation Netherlands
J. C. A Miller-Jones - Curtin University
M. A. P Torres - Space Research Organisation Netherlands
J Homan - Vassar College
S Markoff - University of Amsterdam
J. A Tomsick - University of California, Berkeley
P Kaaret - University of Iowa
R Wijnands - University of Amsterdam
E Gallo - University of Michigan
F Özel - University of Arizona
D. T. H Steeghs - 2Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
R. P Fender - University of Southampton
Resource Type: Journal article
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.423(3), pp.2656-2667
DOI: 10.1111/j.1365-2966.2012.21071.x
ISSN: 0035-8711
eISSN: 1365-2966
Publisher: Blackwell Publishing Ltd
Language: English
Date published: 01/2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984199740202771

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