Mathematics – Probability
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aca....47..307b&link_type=abstract
Acta Astronomica, v.47, pp.307-317, (1997).
Mathematics
Probability
5
Binaries: Close, Stars: Novae: Cataclysmic Variables, Stars: Individual: Ae Aqr
Scientific paper
The flaring activity of the unusual cataclysmic variable AE Aqr is investigated using 55 archival light curves. The variance of the data in a given phase interval -- corrected for the influence of noise, ellipsoidal variations and the 33s variation -- is taken as a measure for the activity of the system in that interval. It is found that the distribution of the variances has a high peak at quite low values, but an extended tail to large ones. In contrast to statements by other authors there appears to be a slight phase dependence of the activity: While flares can definitely occur at any phase, the probability for particularly strong variations is higher in the first half of the orbit than in the second half. This can qualitatively be understood in the framework of a model of AE Aqr as a magnetic propeller.
Bruch Albert
Grutter Martin
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