Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..371h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 190, P. 371, 1980
Astronomy and Astrophysics
Astronomy
11
Scientific paper
We examine the growth of the mirror instability in the interstellar medium taking finite ion Larmor radius effects into account, and find that the growth rate is a maximum at a wavelength approximately 10 times the ion Larmor radius, i.e. ˜10 m. We also examine non-linear effects that limit the growth of the instability, and find that the maximum amplitude of the density fluctuations is in the range 1 m-3 < Δn < 102 m-3. Thus, the occurrence of the mirror instability in the ISM can give a satisfactory account of both the scale length and amplitude of the density fluctuations which give rise to long time-scale pulsar scintillations.
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