Variability in the cycle length of the supersoft source RX J0513.9-6951

Details Variability in the cycle length of the supersoft source RX J0513.9-6951 Variability in the cycle length of the supersoft source RX J0513.9-6951

2008-02-14

arxiv.org/abs/0802.1998v1

Astronomy and Astrophysics

Astrophysics

6 Pages, 5 Figures

Scientific paper

10.1051/0004-6361:20067010

The supersoft X-ray binary RX J0513.9-6951 shows cyclic changes between optical-low / X-ray-on states and optical-high / X-ray-off states. It is supposed to be accreting close to the Eddington-critical limit and driven by "accretion wind evolution". We seek to derive the variations in the characteristic time scales of the long-term optical light curve and to determine the implications for the physical parameters of the system. We used existing and new optical monitoring observations covering a total time span of 14 years and compared the durations of the low and high states with the model calculations of Hachisu & Kato. The cycle lengths and especially the durations of the optical high states show a longterm modulation with variations that, according to the accretion wind evolution model, would imply variations in the mass transfer rate by a factor of 5 on timescales of years.

Affiliated with

Also associated with

No associations

Rating

Variability in the cycle length of the supersoft source RX J0513.9-6951 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 Variability in the cycle length of the supersoft source RX J0513.9-6951, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variability in the cycle length of the supersoft source RX J0513.9-6951 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-682505