The stabilizing effects of cloud reacceleration; Microturbulence, and rotation on Parker's instability

Details The stabilizing effects of cloud reacceleration; Microturbulence, and rotation on Parker's instability The stabilizing effects of cloud reacceleration; Microturbulence, and rotation on Parker's instability

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...201...63z&link_type=abstract

Astrophysical Journal, vol. 201, Oct. 1, 1975, pt. 1, p. 63-73.

Physics

57

Cloud Physics, Cosmic Rays, Galactic Evolution, Galactic Rotation, Interstellar Gas, Interstellar Magnetic Fields, Astronomical Models, Coriolis Effect, Faraday Effect, Galactic Radiation, Interstellar Matter, Magnetohydrodynamics

Scientific paper

Parker's instability is reconsidered with the inclusion of a model equation of state for the gas of interstellar clouds, a tangled interstellar field, and galactic rotation. It is found that the instability is stabilized for most choices of interstellar parameters consistent with observation. For the remaining choices which can lead to instability, the growth time is longer than 100 million years. It is concluded that the instability can have little to do with cosmic-ray escape and probably cannot destroy a primordial galactic field.

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