New beasts in the transient zoo
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Recent or upcoming large-scale surveys will  deliver  in the near future a
wealth of information on transient events. In many cases this may expand our
understanding of events that are known to exist, but also new sorts of
transients are most likely to be discovered.  In my talk I will discuss several
astrophysical systems that produce "non-standard" transient events. These
include tidal disruptions of stars by black holes and explosive events that
result from the interaction between two white dwarfs.