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dc.contributor.authorCurran, Peter
dc.contributor.authorChaty, S.
dc.contributor.authorHeras, J.
dc.identifier.citationCurran, P.A. and Chaty, S. and Heras, J.A. Zurita. 2012. Disentangling the NIR/optical emission of the black hole XTE J1650-500 during outburst. Astronomy & Astrophysics. 547 (A41): pp. 1-8.

Context: While the sources of X-ray and radio emission in the different states of low-mass X-ray binaries are relatively well understood, the origin of the near-infrared (NIR) and optical emission is more often debated. It is likely that the NIR/optical flux originates from an amalgam of different emission regions, because it occurs at the intersecting wavelengths of multiple processes. Aims: We aim to identify the NIR/optical emission region(s) of one such low-mass X-ray binary and black hole candidate, XTE J1650−500, via photometric, timing, and spectral analyses.Methods: We present unique NIR/optical images and spectra, obtained with the ESO-New Technology Telescope, during the peak of the 2001 outburst of XTE J1650−500. Results: The data suggest that the NIR/optical flux is due to a combination of emission mechanisms including a significant contribution from X-ray reprocessing and, at early times in the hard state, a relativistic jet that is NIR/radio dim compared to similar sources. Conclusions: The jet of XTE J1650−500 is relatively weak compared to that of other black hole low-mass X-ray binaries, possibly because we observe as it is being “turned off” or quenched at the state transition. While there are several outliers to the radio-X-ray correlation of the hard state of low-mass X-ray binaries, XTE J1650−500 is the first example of an outlier to the NIR/optical-X-ray correlation.

dc.publisherEDP Sciences
dc.subjectaccretion disks/ISM: jets and outflows/infrared: stars/X-rays: individuals: XTE J1650/500/X-rays: binaries
dc.titleDisentangling the NIR/optical emission of the black hole XTE J1650-500 during outburst
dc.typeJournal Article
dcterms.source.titleAstronomy and Astrophysics

Copyright © 2012 ESO

curtin.accessStatusOpen access

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