at the 90th Spring Meeting of the AAVSO, May 5, 2001
have been reported for a few Miras, including sudden 0.2-magnitude or more
brightening in the visual lasting from a few hours to a few days. Are these
flashes real? Are they hot? What are they? Almost all the natural time scales
for variation in the atmosphere and wind of a Mira variable are months to
years. What could cause such short-term variations? One intriguing possibility
is that the variations are associated with the interaction of a Jovian planet
with the time-dependent outflow of a Mira wind. Here we discuss observable
features of such an interaction in terms of order-of-magnitude estimates and
phenomenology, and make one clear prediction requiring observational followup.
Future work needs to include both theoretical calculations and the development
of systematic methods for searching for such events.