Frequency-time structure of pulsar scintillation

Details Frequency-time structure of pulsar scintillation Frequency-time structure of pulsar scintillation

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192..799h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 192, Sept. 1980, p. 799-804.

Astronomy and Astrophysics

Astronomy

37

Electron Density Profiles, Frequency Response, Interstellar Matter, Pulsars, Scintillation, Diffraction Patterns, Kolmogoroff Theory, Plasma Density, Solar Wind, Time Dependence, Velocity Distribution

Scientific paper

Slow frequency drifts revealed by multichannel spectrometer observations of pulsars provide a sensitive method of detecting irregularities of electron density which are too large to cause interstellar scintillation. Observations of four pulsars are used to compare the density variations in the large- and small-scale irregularities. The values obtained are compatible with a Kolmogorov spectrum for scales in the range 10 to the 10th - 10 to the 13th cm, but suggest that the power-law index may exceed 11/3. The large irregularities offer a simple explanation of apparent reversals in two-station measurements of drift velocity.

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