88 citations · 145 across the 4 of their papers we have counts for
4 papers
High-speed Keck II and RXTE spectroscopy of Cygnus X-2: (I) Three X-ray components revealed by correlated variability
K. O'Brien, Keith Horne, Richard Gomer +2
We have performed simultaneous X-ray and optical spectroscopic observations of the Low Mass X-ray Binary Cygnus X-2. We have used a new data system attached to the Low Resolution I…
Keck II spectroscopy of mHz quasi-periodic oscillations in Hercules X-1
K O'Brien, Keith Horne, B Boroson +5
We present Keck II spectroscopy of an optical mHz quasi-periodic oscillations (QPOs) in the lightcurve of the X-ray pulsar binary Her X-1. In the power spectrum it appears as `peak…
Emission line oscillations in the dwarf nova V2051 Ophiuchi
D. Steeghs, K. O'Brien, K. Horne +2
We have detected coherent oscillations, at multiple frequencies, in the line and continuum emission of the eclipsing dwarf nova V2051 Ophiuchi using the 10m Keck II telescope. Our…
The Discovery and Broad-band Follow-up of the Transient Afterglow of GRB 980703
J. S. Bloom, D. A. Frail, S. R. Kulkarni +14
We report on the discovery of the radio, infrared and optical transient coincident with an X-ray transient proposed to be the afterglow of GRB 980703. At later times when the trans…