Astron. Astrophys. 343, 909-915 (1999)
MV Lyrae recently went into a low state after a 5-year residence in
the high state, and its behavior has somewhat resembled dwarf novae
with recurrence time of 170-200 d and an amplitude of
. The decay time is, however, much
longer than in dwarf novae.
The data show light variations with a "quasi-orbital" period. The
peaks are plagued by daily aliases, but the one closest to the orbital
period is 0.1294 d, which might arise from retrograde motion of the
accretion disk's line of nodes.
During one outburst, we observed flickering which could be fitted
to the shot-noise model with the decay time of a single outburst equal
to 242 s.
Stable QPOs with typical time of 19.2, 29 and 47 minutes have been
found. They are 2, 3 and 5 times longer than the expected value for
the variations of mass transfer rate near the inner Lagrange
© European Southern Observatory (ESO) 1999
Online publication: March 1, 1999