6 papers
Spectral Analysis of Super Soft X-ray Sources: V4743 Sagittarii
Thomas Rauch, Marina Orio, R. Gonzales-Riestra +1
Half a year after its outburst, the nova V4743 Sgr evolved into the brightest super-soft X-ray source in the sky with a flux maximum around 30A, exhibiting resonance lines of C V,…
A Chandra LETGS observation of V4743 Sagittarius: A Super Soft X-ray Source and a Violently Variable Light Curve
J. -U. Ness, S. Starrfield, V. Burwitz +13
V4743 Sgr (Nova Sgr 2002 No. 3) was discovered on 20 September 2002. We obtained a 5ks ACIS-S spectrum in November 2002 and found that the nova was faint in X-rays. We then obtaine…
V382 Vel: a "shocking" supersoft x-ray source?
Marina Orio, Arvind Parmar
Nova Vel 1999 (V382 Vel) was observed with BeppoSAX twice, 15 days and 6 months after the optical maximum. A hard X-ray source was detected in the first observation, while the seco…
The emission nebula associated with V1974 Cyg: a unique object?
R. Casalegno, M. Orio, J. Mathis +6
Through a program of narrow band imaging, we have observed the changing structure of the H alpha emission line around Nova Cyg 1992 (V1974 Cyg) at regular intervals from 1996 to 19…
RX J0537.7-7034: The shortest-period supersoft X-ray source
J. Greiner, M. Orio, R. Schwarz
We present new photometric and spectroscopic observations of the transient supersoft X-ray source RX J0537.7-7034 and find a periodicity of approximately 3.5 hrs. This establishes…
The Long-Term X-Ray Lightcurve of RX J0527.8-6954
J. Greiner, R. Schwarz, G. Hasinger +1
We present further observational data of the supersoft X-ray source RX J0527.8-6954 exhibiting a continuous decline over the past 5 yrs. With no clear trend of a concordant tempera…