The 160-min solar pulsation recorded simultaneously by two radio telescopes

Details The 160-min solar pulsation recorded simultaneously by two radio telescopes The 160-min solar pulsation recorded simultaneously by two radio telescopes

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..312n&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 9, May 1983, p. 312-315) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, May-June 19

Astronomy and Astrophysics

Astronomy

1

Photosphere, Radio Telescopes, Solar Oscillations, Solar Radio Emission, Brightness Distribution

Scientific paper

Observations of the center-limb differential solar brightness obtained at 13.5 mm (using the 22-m radio telescope at the Crimean Astrophysical Observatory) and at 8.15 mm (using the 13.7-m radio telescope at Helsinki University) on June 22, 1981, are presented and compared. An expression for determining the time evolution of the brightness temperature is derived and applied, and a plot of the processed data is shown. A 160-min variation is observed in both cases, with agreement to within 0.05 period. A fourfold difference in amplitude is attributed either to the wavelength difference or to an imperfect match of the areas of the sun observed.

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