112 citations · 172 across the 13 of their papers we have counts for
13 papers
The high-field polar RX J1007.5-2017
H. -C. Thomas, K. Beuermann, K. Reinsch +2
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoi…
Near Infrared observations of Soft X-ray selected AGN
D. Grupe, H. -C Thomas
We report the results of near infrared observations of 19 soft X-ray selected AGN. The goal of the observations was to search for strong, narrow Paschen-alpha or Brackett-gamma emi…
RX J2217.9--5941: A highly X-ray variable Narrow-Line Seyfert1 galaxy
D. Grupe, H. -C. Thomas, K. M. Leighly
We report the discovery of a highly X-ray variable AGN, RX J2217.9-5941. This object was bright during the ROSAT All-Sky Survey (RASS), during which a decrease in the count rate by…
X-ray variability in a complete sample of Soft X-ray selected AGN
D. Grupe, H. -C. Thomas, K. Beuermann
We present ROSAT All-Sky Survey and ROSAT pointed observations (PSPC and HRI) of a complete sample of 113 bright soft X-ray AGN selected from the ROSAT Bright Source Catalog. We co…
The enigmatic soft X-ray NLS1 RX J0134.2-4258
D. Grupe, K. M. Leighly, H. -C. Thomas +1
We report the discovery and analysis of the follow-up ROSAT pointed observation, an ASCA observation and optical and radio observations of the enigmatic Narrow-Line Seyfert 1 galax…
The enigmatic Soft X-ray AGN RX J0134.2--4258
D. Grupe, K. M. Leighly, H. -C. Thomas +1
We report the discovery and analysis of the follow-up ROSAT pointed observation, an ASCA observation and optical and radio observations of the enigmatic soft X-ray AGN RX J0134.2-4…