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RadioAstron: An Earth-Space Radio Interferometer with a 350,000 km Baseline

Authors
  • Kardashev, N. S.
  • Kovalev, Y. Y.
  • Kellermann, K. I.
Type
Published Article
Publication Date
Mar 21, 2013
Submission Date
Mar 21, 2013
Identifiers
arXiv ID: 1303.5200
Source
arXiv
License
Yellow
External links

Abstract

RadioAstron is a Russian space based radio telescope with a ten meter dish in a highly elliptical orbit with an eight to nine day period. RadioAstron works together with Earth based radio telescopes to give interferometer baselines extending up to 350,000 km, more than an order of magnitude improvement over what is possible from earth based very long baseline interferometry. Operating in four frequency bands, 1.3, 6, 18, and 92 cm, the corresponding resolutions are 7, 35, 100, and 500 microarcseconds respectively in the four wavelength bands.

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