Abstract:
The system AR Lac (=BD +45°3813 = HD 210334 = HV 2980 = HR 8448) is an interesting RS CVn binary. The system is known to e a radio sources (vide Hjellming and Blankenship, 1973; Gibson and Hiellming, 1974; Spangler et al.,1977; Feldman, 1978; Owen and Gibson, 1978; Walter et al., 1978) showing variable radio emission and also occasionally flaring activity.