55 citations · 91 across the 2 of their papers we have counts for
4 papers
The optical counterpart to SAX J1808.4-3658: observations in quiescence
L. Homer, P. A. Charles, D. Chakrabarty +1
We report the first extensive set of optical photometric observations of the counterpart to SAX J1808.4-3658 (V4580 Sagittarius) in quiescence. The source was detected at V~21, 5 m…
On the multi-periodicities in the X-ray dipper XB 1916-053
L. Homer, P. A. Charles, P. Hakala +4
Using the Rossi X-ray Timing Explorer and the Nordic Optical Telescope we have obtained the highest ever quality X-ray/white-light high-speed photometry of XB 1916-053. We refine t…
The Off State of GX 339-4
A. K. H. Kong, E. Kuulkers, P. A. Charles +1
We report BeppoSAX and optical observations of the black hole candidate GX 339-4 during its X-ray `off' state in 1999. The broad-band (0.8-50 keV) X-ray emission can be fitted by a…
X-ray/Optical Bursts from GS 1826-24
A. K. H. Kong, L. Homer, E. Kuulkers +2
We report results from the first simultaneous X-ray (RXTE) and optical (SAAO) observations of the low-mass X-ray binary GS 1826-24 in June 1998. A type-I burst was detected in both…