Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Disentangling the NIR/optical emission of the black hole XTE J1650-500
  during outburst   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. 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. 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. 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.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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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci