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The black hole candidate XTE J1752−223 towards and in quiescence : optical and simultaneous X-ray-radio observations
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Ratti, E. M., Jonker, P. G., Miller-Jones, J. C. A., Torres, M. A. P., Homan, J., Markoff, S., Tomsick, J. A., Kaaret, P., Wijnands, R., Gallo, E., Özel, F., Steeghs, D. and Fender, R. P. (2012) The black hole candidate XTE J1752−223 towards and in quiescence : optical and simultaneous X-ray-radio observations. Monthly Notices of the Royal Astronomical Society, Volume 423 (Number 3). pp. 2656-2667. doi:10.1111/j.1365-2966.2012.21071.x
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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2012.21071.x
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 (Porb≲ 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.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Black holes (Astronomy), Double stars | ||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||
| Publisher: | Wiley | ||||
| ISSN: | 00358711 | ||||
| Official Date: | 16 May 2012 | ||||
| Dates: |
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| Volume: | Volume 423 | ||||
| Number: | Number 3 | ||||
| Page Range: | pp. 2656-2667 | ||||
| DOI: | 10.1111/j.1365-2966.2012.21071.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Netherlands Organisation for Scientific Research] (NWO), European Research Council (ERC), Science and Technology Facilities Council (Great Britain) (STFC) |
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