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Hynes, R.I. and Haswell, C. A.
(1999).
DOI: https://doi.org/10.1046/j.1365-8711.1999.02227.x
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.
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About
- Item ORO ID
- 11139
- Item Type
- Journal Item
- ISSN
- 1365-2966
- Keywords
- accretion, accretion discs – binaries: close – stars: individual: GRO 0422+32 – ultraviolet: stars.
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Depositing User
- Astrid Peterkin