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Turbulent interstellar plasma and ultrahigh angular resolution in radio astronomy

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Abstract

The effects of the modulation of radio waves during their passage through turbulent interstellar plasma on measurements of the structure of radio sources made with ultrahigh angular resolution using space radio interferometers are considered. Typical scattering anglesϑscat, pl for an extragalactic radio source at various wavelengths are estimated from scattering observations for pulsars and extragalactic sources. The (ϕ0λ) plane, where ϕ0 is the source size and λ is the wavelength of the radio emission, can be divided into five regions, in which different regimes of radio-wave modulation and image reconstruction are realized. Possibilities for image reconstruction in each of these regions are investigated.

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Authors and Affiliations

  1. Pushchino Radio Astronomy Observatory, Astro Space Center of the Lebedev Institute of Physics, Pushchino, Moscow Region, 142292, Russia

    V. I. Shishov

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  1. V. I. Shishov
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__________

Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 78, No. 3, 2001, pp. 229–237.

Original Russian Text Copyright © 2001 by Shishov.

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Shishov, V.I. Turbulent interstellar plasma and ultrahigh angular resolution in radio astronomy. Astron. Rep. 45, 195–202 (2001). https://doi.org/10.1134/1.1353359

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