Quiescent X-ray/optical counterparts of the black hole transient H 1705-250

Bibcode
2012MNRAS.427.2876Y
DOI
10.1111/j.1365-2966.2012.22119.x
Wijnands, R.; Lewis, F.; Russell, D. M.; Kong, A. K. H.; Yang, Y. J.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society, Volume 427, Issue 4, pp. 2876-2880.

Advertised on:
12
2012
Journal
Monthly Notices of the Royal Astronomical Society
Number of authors
5
IAC number of authors
1
Citations
10
Refereed citations
10
Description
We report the result of a new Chandra observation of the black hole X-ray transient H 1705-250 in quiescence. H 1705-250 was barely detected in the new ˜50 ks Chandra observation. With five detected counts, we estimate the source quiescent luminosity to be LX ˜ 9.1 × 1030 erg s-1 in the 0.5-10 keV band (adopting a distance of 8.6 kpc). This value is in line with the quiescent luminosities found among other black hole X-ray binaries with similar orbital periods. By using images taken with the Faulkes Telescope North, we derive a refined position of H 1705-250. We also present the long-term light curve of the optical counterpart from 2006 to 2012, and show evidence for variability in quiescence.
Related projects
Black hole in outburst
Black holes, neutron stars, white dwarfs and their local environment
Accreting black-holes and neutron stars in X-ray binaries provide an ideal laboratory for exploring the physics of compact objects, yielding not only confirmation of the existence of stellar mass black holes via dynamical mass measurements, but also the best opportunity for probing high-gravity environments and the physics of accretion; the most
Montserrat
Armas Padilla
In progress
Type
Refereed
Stellar & Interstellar Physics (FEEI)

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