Other
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217..832k&link_type=abstract
Astrophysical Journal, Part 1, vol. 217, Nov. 1, 1977, p. 832-842.
Other
20
Circular Polarization, Pulsars, Radio Emission, Stellar Models, Angular Momentum, Brightness Temperature, Electrons, Emission Spectra, Magnetohydrodynamic Stability, Plasma-Particle Interactions, Positrons, Pulsed Radiation, Radiant Flux Density, Relativistic Particles, Stellar Spectra, Stellar Temperature, Wave Propagation
Scientific paper
It is pointed out that the simultaneous excitation of right and left circularly polarized waves by ultrarelativistic nongyrating beams of electrons and positrons provide a possible mechanism for pulsar radio emission. By using a quasi-linear approximation, it is shown that such a mechanism yields a huge brightness temperature, in excess of 10 to the 25th power K, enough to explain the observed one. The radio spectrum obtained has a low-frequency cutoff or turnover and decreases approximately as the inverse cube of frequency in the high-frequency range, a result insensitive to the assumed distribution function of the beam. Such spectral behavior gives a good fit to some pulsar spectra. Some other features of pulsar radiation are also discussed in the framework of this model.
Kawamura Katsunori
Suzuki Isao
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