High speed photometry of dwarf nova EX Hydrae

Details High speed photometry of dwarf nova EX Hydrae High speed photometry of dwarf nova EX Hydrae

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc....9..330s&link_type=abstract

IN: International Cosmic Ray Conference, 18th, Bangalore, India, August 22-September 3, 1983, Late Papers. Volume 9 (A85-22801 0

Physics

Dwarf Novae, Light Curve, Stellar Spectrophotometry, X Ray Sources, Eclipsing Binary Stars, High Resolution, White Dwarf Stars

Scientific paper

High speed optical photometric observations of the hard X-ray source EX Hya, carried out with the reflector of the Kevalur Observatory, are presented. The observations with time resolutions of 1 s or 2 s were made on four nights in March 1982 for a total duration of 6.8 h. Light curves that reveal fast flickerings and the 67 min oscillations are presented. A new ephemeris for the photometric period confirms the trend towards decreasing period on a time scale of 10-million years. Evidence for the presence of interpulses in the light curves between successive photometric maxima is also shown.

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