The X-ray pulse profile of BG CMi
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.
- Publication:
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New Astronomy
- Pub Date:
- November 2007
- DOI:
- 10.1016/j.newast.2007.05.002
- arXiv:
- arXiv:0705.3165
- Bibcode:
- 2007NewA...12..622C
- Keywords:
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- Astrophysics
- E-Print:
- To appear in New Astronomy