Publications of The Korean Astronomical Society (천문학논총)
- Volume 15 Issue spc1
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- Pages.113-118
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- 2000
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- 1225-1534(pISSN)
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- 2287-6936(eISSN)
LINE EMISSION FROM THE MAGNETOSPHERE OF MAGNETIC CATACLYSMIC VARIABLES
MCV 자기구에서의 선방출
- KIM YONGGI (Dept. of Astronomy and Space Science, Chungbuk National University)
- 김용기 (충북대학교 천문우주학과)
- Published : 2000.08.01
Abstract
A magnetic cataclysmic variable has a rotating magnetic white dwarf which accretes matter from its late type companion. Kim & Beuermann (1995) presented a phenomenological model of the accretion from its surrounding structure e.g., a disk into the magnetosphere of the white dwarf, and presented results for the spin modulated X-ray spectrum and light curves. Using this model, we calculate the optical continuum and line emission which result from reprocessing of X-rays in the accretion stream within the magnetosphere. Penning (1985) suggested the observed spin-modulated radial-velocity variations might result from reprocession of X-rays in the disk. We, however, find the radiation can be originated from the magnetosphere accretion stream. We use the same geometrical model to calculate the optical and the X-ray behaviour. The results from the two wavelength bands are internally consistent. We conclude that this approach will increase the diagnostic accuracies of the results.