title: Relativistic generalization of the Landau criterion as a new foundation of the Vavilov-Cherenkov radiation theory.
abstract: The relativistic generalization of the Landau criterion is obtained for the determination of threshold conversion of medium elementary Bose-condensed excitation into Cherenkov's photon unbremsstrahlung radiation. In contraposition to classic Vavilov-Cherenkov radiation (VCR) theory, the new VCR theory admits the conditions for effective and direct VCR realization even for high-frequency transverse electromagnetic waves in isotropic plasma.
authors.affiliation: A. M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia. schefranov@mail.ru
authors.forename: S G
authors.initials: SG
authors.lastname: Chefranov