Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..153s&link_type=abstract
In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 153-155 (SEE N89-24910 18-75)
Astronomy and Astrophysics
Astronomy
Density Distribution, Interstellar Matter, Particle Acceleration, Plasma Density, Shock Fronts, Cosmic Plasma, Cosmic Rays, Magnetohydrodynamic Waves, Radio Sources (Astronomy), Shock Waves, Supernova Remnants
Scientific paper
Theories of diffuse shock acceleration of the cosmic rays that predict that there should be regions of intense Alfven waves both upstream and downstream of the shock front are considered. Observations of similar waves near solar system shock waves show that they produce substantial density fluctuations. Such density fluctuations might produce observable scattering of radio waves. Observations which searched for angular broadening or blurring of radio sources whose lines of sight pass close to or through supernova remnants are discussed. No definite cases of remnant-associated scattering are detected. However, the source CL 4, which is viewed through the Cygnus Loop supernova remnant, may be such an object and merits further observation.
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