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Abstract
The diffractive interstellar scintillation of 11 pulsars at 1410 MHz and of five pulsars at 4800 MHz was analysed to estimate the spectrum of the electron density fluctuations as well as the ACF, CCF and the structure function. We present dynamic spectra for a few pulsars at high frequencies in the strong and weak regime and show that a lensing effect probably exists for pulsar PSR B2020+28 at 1410 MHz. The mean value of the indexes of the power law spectra for an ensemble of pulsars is in good agreement with a Kolmogorov spectrum.
Acknowledgements
The authors thank V. Shishov and T. Smirnova for useful discussions. We thank the staff of the Effelsberg radio telescope for support with the observations and L. Potapova for technical assistance. This work was supported by the Russian Foundation for Basic Research, grants 06-02-16888 and 06-02-16522.