Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-03-02
Astronomy and Astrophysics
Astrophysics
4 pages, 4 figures; accepted for publication in A&A Letters
Scientific paper
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 and persistent X-ray variability on both short and medium time-scales. The most extreme amplitude variations require a radiative efficiency exceeding the theoretical maximum for a Schwarzschild black hole, suggesting the presence of a rotating black hole or the influence of relativistic beaming effects. The spatial analysis rules out the possibility that the high luminosity and the strong variability are related to a nearby source.
Boller Th.
Brandt Wiliam N.
Brinkmann Wolfgang
Gliozzi Mario
No associations
LandOfFree
ROSAT HRI monitoring of X-ray variability in the NLS1 galaxy PKS 0558-504 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with ROSAT HRI monitoring of X-ray variability in the NLS1 galaxy PKS 0558-504, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ROSAT HRI monitoring of X-ray variability in the NLS1 galaxy PKS 0558-504 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-175471