[vsnet-alert 13249] ER UMa : negative superhumps intermittently appearred

[Ohshima]

ER UMa : negative superhumps intermittently appearred

 We have received further observations from Crimean Astrophy. Obs. 
(observer: Denis Samsonov), Pavol A. Dubovsky, and Jani Virtanen
 According to these observations, superoutburst continues.
Positive superhumps still excessed. However, the combination of 
positive superhumps and negative superhumps reappearred on Apr 25.8.
Negative superhumps diasappeared again on Apr 26.8.
 It is interesting when the negative superhumps appear or disappear.
Further observations are encouraged!