Refractive scintillation of extragalactic radio sources

Details Refractive scintillation of extragalactic radio sources Refractive scintillation of extragalactic radio sources

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aipc..174..163c&link_type=abstract

IN: Radio wave scattering in the interstellar medium; Proceedings of the AIP Conference, San Diego, CA, Jan. 18, 19, 1988 (A89-2

Physics

9

Extragalactic Radio Sources, Interstellar Matter, Radio Scattering, Refractivity, Scintillation, Angular Distribution, Electron Density (Concentration), Kolmogoroff Theory, Power Spectra, Pulsars

Scientific paper

Compact extragalactic sources can display intensity fluctuations which are caused by fluctuations in the electron density of the interstellar medium. The 1/e time scale of these refractive scintillations can be many years. The intensity structure function has been computed for various distributions of the density fluctuations in the interstellar medium. The results show that the intensity fluctuations observed for periods much smaller than the 1/e time scale are dominated by the region near the earth. Thus most observations actually sample only the local region.

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