Early superhumps

early superhumps

Early superhumps (, or sometimes "early humps") are short-term periodic variations observed in WZ Sge-type dwarf novae during superoutbursts. While ordinary superhumps have a period slightly ( a few percent ) longer than the orbital period, the period of early superhump is almost in agreement with the orbital period. Early superhumps appear only the first few days of the WZ Sge-type superoutbursts.