O-C Analysis of FO Aqr, ``King of Intermediate Polars''

Details O-C Analysis of FO Aqr, ``King of Intermediate Polars'' O-C Analysis of FO Aqr, ``King of Intermediate Polars''

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..335..229a&link_type=abstract

The Light-Time Effect in Astrophysics, Proceedings of ASP Conference Series, Vol. 335, held in Brussels 19-22 July 2004. Edited

Astronomy and Astrophysics

Astrophysics

8

Scientific paper

B V and R CCD observations of FO Aqr have been analysed. The spin period rapidly decreases, being equal to 0.01451718(19) days in 2004. The initial epoch for the seasonal mean maximum is 2453227.20864(9), and a semi-amplitude is 0.092(3) mag. The rate of the spin-up of the white dwarf is variable, with a rapidly increasing value. The historical change in 1987 from spin-down to a spin-up does not reflect the accretion-rate variations, as the mean magnitude remains constant within ˜ 0.1 mag, and a fast acceleration of the spin-up may be caused by changes of the magnetosphere e.g. due to the precession of the white dwarf. Our data support the ``fit 3" model of Williams (2003) for the cycle counting.

Affiliated with

Also associated with

No associations

Rating

O-C Analysis of FO Aqr, ``King of Intermediate Polars'' 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 O-C Analysis of FO Aqr, ``King of Intermediate Polars'', we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and O-C Analysis of FO Aqr, ``King of Intermediate Polars'' will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1434534