16 papers
CHANDRA observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809
F. Pfefferkorn, Th. Boller, V. Burwitz +1
The narrow-line Seyfert 1 galaxy (NLS1) IRAS 13224-3809 has been observed with the CHANDRA High Resolution Camera (HRC-I) for 12 ksec on February, 2, 2000. The source was proposed…
Soft X-ray Properties of ULIRGs Based on a Large and Complete Sample
X. -Y. Xia, Th. Boller, Z. -G. Deng +1
We report on the results of the cross-correlation of a sample of 903 Ultraluminous IRAS galaxies (ULIRGs) with the ROSAT-All Sky Survey Bright Source Catalogue and the ROSAT archiv…
The response of the X-ray luminosity to the interaction strength in Seyfert 1 & 2 galaxies
F. Pfefferkorn, Th. Boller
We have correlated a sample of 99 Seyfert 1 and 98 Seyfert 2 (Rafanelli et al., 1995) interacting galaxies with the survey and pointed ROSAT data and have detected 91 Seyferts 1 an…
ROSAT HRI monitoring of X-ray variability in the NLS1 galaxy PKS 0558-504
M. Gliozzi, Th. Boller, W. Brinkmann +1
We present the results of ROSAT High Resolution Imager (HRI) observations and the survey data of the radio-loud Narrow-Line Seyfert 1 galaxy (NLS1) PKS 0558--504. We find strong an…
Search for GRB X-ray afterglows in the ROSAT all-sky survey
J. Greiner, D. H. Hartmann, W. Voges +3
We describe a search for X-ray afterglows from gamma-ray bursts using the ROSAT all-sky survey (RASS) data. If the emission in the soft X-ray band is significantly less beamed than…
The ROSAT All-Sky Survey Bright Source Catalogue
Wolfgang Voges, Bernd Aschenbach, Thomas Boller +16
We present the ROSAT All-Sky Survey Bright Source Catalogue (RASS-BSC, revision 1RXS) derived from the all-sky survey performed during the first half year (1990/91) of the ROSAT mi…