title: Bernstein modes in a weakly relativistic electron-positron plasma.
abstract: The form of the propagating electrostatic Bernstein mode in a relativistic electron-positron plasma is markedly different from that in the classical plasma, once the momentum-dependent cyclotron frequency is accounted for in full inside the integrations. Given that particles in different parts of momentum space "see" a different cyclotron frequency, there is no simple global singularity which reproduces the classical dispersion features.
authors.affiliation: Department of Physics and Astronomy, Kelvin Building, University of Glasgow, Scotland, United Kingdom.
authors.forename: D A
authors.initials: DA
authors.lastname: Keston
authors.forename: E W
authors.initials: EW
authors.lastname: Laing
authors.forename: D A
authors.initials: DA
authors.lastname: Diver