Abstract:
Investigations of the eclipsing binary system AR Lacertae have been reported earlier by author (cf. Srivastava, 1981; 1983s; 1983b; 1984; Goraya and Srivastava, 1984). AR Lac is a well known radio flaring sources. Some evidence of spot activity (cf. Srivastava, 1981; 1984; Goraya and Srivastava 1984). Recently Walter et al. (1983) derived coronal structure of the components of the system from X-ray and UV observations.
