8 papers
Super Soft Sources
P. Kahabka
The class of Super Soft Sources has been established after discoveries performed with the Einstein and the ROSAT satellite. Only sources contributing to the class of super-soft X-r…
X-ray Energy Spectra of the Super-soft X-ray Sources CAL87 and RXJ0925.7-4758 Observed with ASCA
K. Ebisawa, K. Mukai, T. Kotani +7
We report observation results of the super-soft X-ray sources (SSS) CAL87 and RXJ0925.7-4758 with the X-ray CCD cameras (Solid-state Imaging Spectrometer; SIS) on-board the ASCA sa…
The nature of RXJ0052.1-7319
P. Kahabka
The nature of the X-ray source RXJ0052.1-7319 is discussed from observational data obtained from ROSAT observations performed in 1995 and 1996. An accurate position is derived from…
A BeppoSAX observation of the supersoft source 1E 0035.4-7230
P. Kahabka, A. N. Parmar, H. W. Hartmann
Results from a 37,000 s BeppoSAX Low-Energy Concentrator Spectrometer (LECS) observation of the supersoft source SMC 13 (=1E 0035.4-7230) in the Small Magellanic Cloud are reported…
The recent pulse period evolution of SMC X-1
P. Kahabka, X. -D. Li
We report observations of SMC X-1 in three new high-intensity states with ROSAT HRI in December 1995, May 1997, and March 1998 in which pulsations with a period of 0.70769+/-0.0000…
The M31 population of supersoft sources
Peter Kahabka
The 1991 ROSAT PSPC M31 X-ray point source catalog has been screened in order to set up a sample of candidate supersoft sources in this galaxy, additional to the 16 supersoft sourc…