On the acceleration of interstellar grains

Details On the acceleration of interstellar grains On the acceleration of interstellar grains

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..42l..11m&link_type=abstract

Astrophysics and Space Science, vol. 42, July 1976, p. L11-L15.

Astronomy and Astrophysics

Astrophysics

5

Galactic Clusters, Interstellar Magnetic Fields, Interstellar Matter, Magnetic Pumping, Particle Acceleration, Stochastic Processes, Helium Atoms, Hydrogen Ions, Larmor Precession

Scientific paper

The paper investigates the stochastic acceleration of charged dust grains as they pass through irregularities in the galactic magnetic field. Grains of radius less than about 3 microns may be accelerated to a speed approximately equal to 0.1 times the speed of light by the magnetic pumping mechanism if there is a sufficient number of scatterings before the grain leaves the spiral arms. If the grain initial velocities are around 1 million m/sec, it is possible to accelerate a significant fraction of small interstellar grains to 0.1 times the speed of light.

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