Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-20
Astronomy and Astrophysics
Astrophysics
12 pages, 7 figures, To appear in PASJ, vol. 54, No. 6
Scientific paper
GK Per is a unique cataclysmic variable star which has showed a nova explosion as well as dwarf nova-type outbursts, and has the intermediate-polar nature. We carried out V-band time-resolved photometry and B-band monitoring during the 1996 outburst. This outburst lasted about 60 d and is divided into three parts: the slow rise branch for 35 d, the gradual decay branch with a decay rate of 20.0 d/mag for ~16 d, and the rapid decline branch with a rate of 5.6 d/mag for ~10 d. The $B-V$ color became bluest (B-V~0.18) about 10 d before the outburst maximum, which supports an idea that the outburst in GK Per is of the inside-out type. The spin pulse, 440-s quasi periodic oscillations (QPOs), and ~5,000-s QPOs were detected in our light curve, as previously seen in X-ray and optical observations. In addition, we report the discovery of ~300-s periodicity, which is shorter than the spin period.
Baba Hideshi
Kato Taichi
Nogami Daisaku
No associations
LandOfFree
Time-Resolved Photometry of GK Per during the 1996 Outburst 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 Time-Resolved Photometry of GK Per during the 1996 Outburst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-Resolved Photometry of GK Per during the 1996 Outburst will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-224154