Document Type
Article
Publication Date
2-11-1999
Abstract
We present HST/FOS ultraviolet and optical spectroscopy of the black hole X-ray transient GRO J0422+32 shortly before the system reached quiescence. We find that the accretion spectrum from 2500 to 9000 Å can be very well fitted by a self-absorbed synchrotron model, with superposed H I and Mg II emission lines. The explanations that we suggest for this spectrum are either that it is due to active coronal regions above a geometrically thin accretion disc, or that the disc is evaporated into an advective flow.
Publication Source (Journal or Book title)
Monthly Notices of the Royal Astronomical Society
First Page
101
Last Page
106
Recommended Citation
Hynes, R., & Haswell, C. (1999). Hubble space telescope observations of the black hole X-ray transient GRO J0422+32 near quiescence. Monthly Notices of the Royal Astronomical Society, 303 (1), 101-106. https://doi.org/10.1046/j.1365-8711.1999.02227.x