Sentences with phrase «observed flare activity»
In the 1970s and 1980s, some astronomers suggested that observed flare activity or light minima in EV Lac's light curve between flares could have been caused by an eclipsing companion with an orbital period of around 45 years and a high orbital eccentricity (e ~ 0.5)(G. Sh.
http://www.solstation.com/ Not exact matches
From May to August 1995, several flares were observed with changes within a time - scale of weeks, and archival data suggests that the star may have a long - term activity cycle (Guinan and Morgan, 1996).
Eclipsing variables of this type may develop into eruptive «dwarf novae» similar to U Geminorum and SS Cygni, and U Pegasi has been observed to exhibit flares or eruptions of small amplitude that may presage more violent activity at a later stage of evolution.
This spacecraft was designed to observe gamma rays, X-rays and UV radiation from solar flares during a time of high solar activity.