8 papers · 1 filter
Bowen blend echo-tomography of low mass X-ray binaries
T. Muñoz-Darias, I. G. Martinez-Pais, J. Casares +7
We present simultaneous high time resolution (1-10 Hz) X-ray and optical observations of the persistent LMXBs Sco X-1 and V801 Ara(=4U 1636-536). In the case of Sco X-1 we find tha…
Echoes from the companion star in Sco X-1
T. Muñoz-Darias, I. G. Martinez-Pais, J. Casares +5
We present simultaneous X-ray (RXTE) and optical (ULTRACAM) narrow band (Bowen blend/HeII and nearby continuum) observations of Sco X-1 at 2-10 Hz time resolution. We find that the…
Bowen Fluorescence from Companion Stars in X-ray Binaries
J. Casares, D. Steeghs, R. I. Hynes +3
This paper will review a new technique of detecting companion stars in LMXBs and X-ray transients in outburst using the Bowen fluorescence lines at 4634-4640 Angs. These lines are…
Discovery of 1RXS J171824.2-402934 as an X-ray burster
R. G. Kaptein, J. J. M. in 't Zand, E. Kuulkers +3
We report the first-time detection of a type-I X-ray burst from a position that is consistent with that of 1RXS J171824.2-402934. The detection was made on Sep 23, 1996, with the W…
Turmoil on the accretion disk of GRO J1655-40
E. Kuulkers, J. J. M. in 't Zand, R. Cornelisse +7
During the 1996/1997 outburst of the X-ray transient GRO J1655-40 the Wide Field Cameras onboard BeppoSAX observed the system with nearly continuous coverage during some stages of…
The longest thermonuclear X-ray burst ever observed? (A BeppoSAX Wide Field Camera observation of 4U 1735-44)
R. Cornelisse, J. Heise, E. Kuulkers +2
A long flux enhancement, with an exponential decay time of 86 min, is detected in 4U 1735-44 with the BeppoSAX Wide Field Cameras. We argue that this is a type-I X-ray burst, makin…