VLBI of solar flares

Details VLBI of solar flares VLBI of solar flares

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...122..177t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 122, no. 1-2, June 1983, p. 177-180. Research supported by the Nederlandse Org

Astronomy and Astrophysics

Astronomy

14

Radio Astronomy, Radio Telescopes, Solar Flares, Solar Radio Emission, Very Long Base Interferometry, Angular Resolution, Signal To Noise Ratios, Statistical Correlation

Scientific paper

From April 28 to May 3, 1981, a VLBI experiment was carried out to observe small spatial scales in the initial energy release in solar flares. The 25 m radio telescope at Onsala (Sweden) and Dwingeloo (Netherlands) were used; the observing wavelength was 18 cm. Simultaneous observations were made using the Westerbork Synthesis Radio Telescope at a wavelength of 6 cm. The VLBI baseline was 619 km. During the observing period, three weak outbursts were observed, none yielding any strong correlated signals. However, the statistical behaviour of the correlator output over the range of delay channels shows significant indications of a correlated signal having a signal to noise ratio of order unity, during the impulsive spikes preceding the main phase of the event.

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