Astron. Astrophys. 343, 909-915 (1999)

7. Conclusion

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 point.

© European Southern Observatory (ESO) 1999

Online publication: March 1, 1999
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