Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..143o&link_type=abstract
(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews
Astronomy and Astrophysics
Astronomy
25
Cataclysmic Variables, Light Curve, Radiant Flux Density, Spaceborne Astronomy, Stellar Spectrophotometry, X Ray Spectra, Black Body Radiation, Exosat Satellite, Red Dwarf Stars, Spectral Energy Distribution, Visible Spectrum, White Dwarf Stars
Scientific paper
New results obtained from the EXOSAT AO-1 observation of the intermediate polar V1223 Sgr are reported. The detection of a 12.4 minute period in the medium energy X-ray flux with an associated hardness ratio variation has been previously reported in Osborne et al. (1984). Further work has revealed: a narrow dip at the phase zero in the folded medium energy light curve; about 30 percent modulation in the low energy X-ray (3000 Lexan) flux; a count rate ratio from 3 filters which allow the presence of a bright low temperature blackbody component (kT = .05 - .40 KeV); and a phase resolved ME spectrum which must have two or more components when the source is bright. New optical ephemerides show that the X-ray and optical pulses are in phase at an orbital phase of Phi = 0.31.
Beuermann Klaus
Mason Keith O.
Osborne Julian Paul
Rosen Rachel
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