Physics – Plasma Physics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..dpp.fm101c&link_type=abstract
American Physical Society, 41st Annual Meeting of the Division of Plasma Physics, November 15-19, 1999 Seattle, WA, abstract #FM
Physics
Plasma Physics
Scientific paper
We will review radio-wave diagnostics that sample microstructure in ionized interstellar gas on length scales from approximately 100 km to one parsec. A summary will be made of the implied wavenumber spectrum, constraints on turbulent velocities, and the large-scale Galactic distribution of the ionized gas and its fluctuations. We will then discuss the role of magnetic fields and the possible relationship of the observed density fluctuations to magnetic field irregularities that scatter cosmic rays. If such a link exists, then the galactic distribution of density fluctuations in ionized gas may be used to probe the sources of and diffusion of cosmic rays. Possible tests of this picture include the correlation of spatial variations of 100 MeV gamma-rays with variations in the radiowave scattering strength. This work is supported by the National Science Foundation. Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.
Cordes James M.
Lazio Joseph T. W.
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