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    Disentangling the NIR/optical emission of the black hole XTE J1650-500 during outburst

    190328_75651_Curran___3__aa19228-12.pdf (499.6Kb)
    Access Status
    Open access
    Authors
    Curran, Peter
    Chaty, S.
    Heras, J.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Curran, 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.
    Source Title
    Astronomy and Astrophysics
    DOI
    10.1051/0004-6361/201219228
    ISSN
    0004-6361
    Remarks

    Copyright © 2012 ESO

    URI
    http://hdl.handle.net/20.500.11937/37502
    Collection
    • Curtin Research Publications
    Abstract

    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.

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