[vsnet-alert 9712] AL Com: rebrightening and oscillation continues

[Makoto Uemura]

AL Com: rebrightening and oscillation continues

Our last night observation (15 Nov.) shows that the rebrightening 
still continues. We also performed a time-series observation 
for ~1.3 hours, about an orbital period of AL Com. Both in 
V- and J-bands, no prominent modulation, or superhump was found 
in the light curves.

http://kanatatmp.blogspot.com/search/label/AL%20Com

Its magnitudes are clearly oscillating during the last week. 
Combined with other observations shown in [vsnet-alert 9710], 
the range of magnitudes is 16.2 - 15.2. 
In conjunction with the lack of superhumps, this oscillation 
probably indicates repeated short brightenings, as observed in 
WZ Sge.  In previous studies, it is known that AL Com exhibits 
a long-plateau type rebrightening. 
The rebrightening pattern may be different in the current event.

Regards,
M. Uemura, A. Arai, and M. Sasada
on behalf of the KANATA team
Hiroshima University