Synchrotron thermal instabilities and filamentation in radio sources

Details Synchrotron thermal instabilities and filamentation in radio sources Synchrotron thermal instabilities and filamentation in radio sources

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..299b&link_type=abstract

In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 299-302 (SEE N89-24910 18-75)

Physics

Plasma Physics

Magnetohydrodynamic Stability, Radio Sources (Astronomy), Stellar Radiation, Synchrotron Radiation, Interstellar Magnetic Fields, Magnetosonic Resonance, Plasma Physics, Relativistic Electron Beams

Scientific paper

The thermal instability of a magnetized plasma connected with the synchrotron emission of relativistic electrons is studied, extending analyses of Simon and Axford (1967), and Eilek and Caroff (1979). The possibility of oblique propagation of unstable perturbations with respect to the magnetic field direction; and the effect of the assumption of a power law spectrum for the relativistic electrons are considered. In addition to the classical condensation mode, it is found that also slow magnetosonic waves can be driven unstable. It is proposed that the development of this instability can lead to the formation of the filamentary structures observed in the lobes of Cygn A.

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