6 papers
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…
ROSAT HRI observations of radio-loud AGN
M. Gliozzi, W. Brinkmann, S. A. Laurent-Muehleisen +2
We present the results of three ROSAT HRI observations of AGN expected to reside in clusters of galaxies. Although the exposures were truncated by the premature end of the ROSAT mi…
An ASCA observation of the radio-loud narrow-line Seyfert 1 galaxy RGB J0044+193
J. Siebert, K. M. Leighly, S. A. Laurent-Muehleisen +3
We present the results of an ASCA observation of the radio-loud NLS1 galaxy RGB J0044+193. The X-ray data are complemented by radio observations and a new optical spectrum for this…
Four New BL Lac Surveys: Sampling New Populations
S. A. Laurent-Muehleisen, R. H. Becker, W. Brinkmann +5
The advent of large area deep radio and X-ray surveys is leading to the creation of many new BL Lac samples. In particular, the ROSAT All-Sky, Green Bank and FIRST surveys are prov…
The broad band X-ray spectra of intermediate BL Lac objects
J. Siebert, W. Brinkmann, S. A. Laurent-Muehleisen +1
We present recent X-ray observations of intermediate BL Lac objects (IBLs), i.e. BL Lacs which are located between high-energy and low-energy peaked BL Lac objects with respect to…
Recent X-ray observations of intermediate BL Lac objects
J. Siebert, W. Brinkmann, S. A. Laurent-Muehleisen
We present recent ROSAT, ASCA and SAX observations of intermediate BL Lac objects (IBLs), i.e. BL Lacs which are located between high-energy and low-energy peaked BL Lac objects wi…