Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1779721 | New Astronomy | 2007 | 8 Pages |
Abstract
We present an analysis of the X-ray data of a magnetic cataclysmic variable, BG CMi, obtained with ROSAT in March 1992 and with ASCA in April 1996. We show that four peaks clearly exist in the X-ray pulse profile, unlike a single peak found in the optical profile. The fluxes of two major pulses are ∼2–5 times larger than those of two minor pulses. The fraction of the total pulsed flux increases from 51% to 85% with increasing energy in 0.1–2.0 keV, whereas it decreases from 96% to 22% in 0.8–10 keV. We discuss the implications of our findings for the origin of the pulse profile and its energy dependence.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Chul-Sung Choi, Tadayasu Dotani, Yonggi Kim, Dongsu Ryu,