4 papers
Spectrally resolved flares in the quiescent black hole V404 Cyg
R. I. Hynes, P. A. Charles, C. Zurita +3
We present a spectrophotometric study of short-term optical variability in the quiescent black hole X-ray transient V404 Cyg focusing on two nights of Halpha spectroscopy. We find…
Multiwavelength observations revealing the outbursts of the soft X-ray transients XTE J1859+226 and XTE J1118+480
S. Chaty, C. A. Haswell, R. I. Hynes +2
We report multiwavelength observations of the two soft X-ray transients (SXTs) XTE J1859+226 and XTE J1118+480, which we observed with HST, RXTE and UKIRT. The two sources exhibite…
The 1996 outburst of GRO J1655-40: disc irradiation and enhanced mass transfer
A. A. Esin, J. -P. Lasota, R. I. Hynes
We show that the 1996 outburst of the X-ray binary transient system GRO J1655-40 can be explained by the standard dwarf-nova type disc instability, followed by an episode of enhanc…
Optical studies of the X-ray transient XTE J2123-058 - II. Phase resolved spectroscopy
R. I. Hynes, P. A. Charles, C. A. Haswell +2
We present time-resolved spectroscopy of the soft X-ray transient XTE J2123-058 in outburst. Spectral coverage of 3700-6700A was achieved spanning two orbits of the binary. The str…