The excitation of a cyclotron potential instability in the magnetospheres of pulsars

Details The excitation of a cyclotron potential instability in the magnetospheres of pulsars The excitation of a cyclotron potential instability in the magnetospheres of pulsars

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983sogru.109..525b&link_type=abstract

Akademiia Nauk Gruzinskoi SSR, Soobshcheniia (ISSN 0132-1447), vol. 109, March 1983, p. 525-528. In Russian.

Astronomy and Astrophysics

Astrophysics

Astrophysics, Cyclotron Radiation, Pulsar Magnetospheres, Pulsars, Stellar Atmospheres, Electron-Positron Plasmas, Plasma Resonance, Plasma Waves, Positrons, Relativistic Particles, Stellar Magnetic Fields, Wave Excitation

Scientific paper

It is believed that in the magnetosphere of a pulsar plasma flows along the open force lines of the magnetic field with relativistic velocities. This plasma is pierced by a beam. The electrons and positrons of the plasma rapidly lose their transverse momentum when the magnetic induction is approximately 10 to the 12th gauss. The one-dimensional distribution function turns out to be unstable in relation to the development of the electromagnetic cyclotron instability. This latter instablity in turn leads to quasi-linear diffusion. The effective pitch angle is obtained when allowance is made for quasi-linear diffusion and the weak inhomogeneity of the magnetic field. With the pitch angle, the plasma may turn out to be unstable in relation to the excitation of waves whose frequencies are close to the cyclotron frequency. Consideration is given here to the simple case of the excitation of potential waves in a cold electron-positron plasma proagating at right angles to the magnetic field.

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