Generalized Cherenkov radiation from tachyonic sources

The possibility of a generalized Cherenkov radiation is investigated which would result from the coupling of a superluminal (tachyonic) source to a short range ''massive'' field. One mainly focused on the properties of this ''generalized Cherenkov radiation'' by tachyons in a vacuum. The complementary problem of the source dynamics was also pursued, and its relation to Cherenkov radiation elucidated