Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pazh...15..975s&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 15, Nov. 1989, p. 975-984. In Russian. In Russian. In Russian.
Astronomy and Astrophysics
Astronomy
3
Extragalactic Radio Sources, Interstellar Matter, Scintillation, Space Plasmas, Annual Variations, Decimeter Waves, Inhomogeneity, Power Spectra
Scientific paper
Scintillations on interstellar plasma inhomogeneities are proposed as an explanation for flux variations of extragalactic radio sources with periods of about 1 yr at decimeter and meter wavelengths. The values of the scintillation index and its dependence on the wavelength and source flux correspond to the effect of saturated scintillations on inhomogeneities with a power law spectrum which falls abruptly at the frequency corresponding to the inner scale l = 3 X 10 to the 12th cm.
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