116 citations · 116 across the 5 of their papers we have counts for
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Transient supersoft X-ray emission from V751 Cyg during the optical low-state
J. Greiner, G. H. Tovmassian, R. DiStefano +4
We have observed V751 Cyg with the ROSAT HRI during its recent optical low state and clearly detect it at a count rate of 0.015 cts/s. The X-ray intensity is a factor of ~20 higher…
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution
A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel +21
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detect…
Relation between supersoft X-ray sources and VY Scl stars
Jochen Greiner, Rosanne DiStefano
In a recent ROSAT observation, taken during its optical low state, we found that the VY Scl star V751 Cyg was a highly luminous source of soft X-rays. The ROSAT HRI count rate of V…
Filling up the period gap: RX J0803.4-4748, a new 137 minute polar
Robert Schwarz, Jochen Greiner
We report the discovery of a new AM Herculis system as the counterpart of the bright and very soft X-ray source RX J0803.4-4748 found serendipitously in a ROSAT PSPC pointing. Opti…
High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557
G. H. Tovmassian, P. Szkody, J. Greiner +7
We present phase-resolved spectral and multicolor CCD-photometric observations of the eclipsing polar RX J0719.2+6557 obtained with relatively high time (~600 sec/15 sec) and spect…
On the X-ray properties of V Sge and its relation to the supersoft X-ray binaries
Jochen Greiner, Andre van Teeseling
We investigate the ROSAT X-ray properties of V Sge, which has been proposed to be related to supersoft X-ray binaries. During optical bright states, V Sge is a faint hard X-ray sou…