Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995acaps..15..233q&link_type=abstract
Acta Astrophys. Sin., Vol. 15, No. 3, p. 233 - 243
Astronomy and Astrophysics
Astrophysics
Pulsars: Interstellar Scintillation
Scientific paper
The structure functions of the long-term flux variation in PSR 2217+47 at decimeter wavelengths are analysed and interpreted in terms of refractive interstellar scintillation. It is shown that the RISS theory can explain the observed structure functions well if the power-law spectrum of electron density inhomogeneities in the interstellar medium has an index β = 4. It is pointed out that in order to study the low-frequency variations and intraday variability observed in compact extragalactic radio sources, combined measurements on pulsars and extragalactic radio sources in the same directions are required.
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