The solar oscillatory component has been observed at a wavelength of 3 mm by its modulation of the solar free-free emission. Observations were carried out separately at 3.3 and 3.5 mm with two different radio telescopes to rule out possible instrumental and atmospheric effects. Power spectra of the data show that the strongest spectral component is at 0.0055 Hz period 180 sec. These observations indicate that it is possible, by radio techniques, to extend observations of the solar oscillatory component to geater heights in the solar atmosphere than those previously observed in photospheric and low chromospheric spectral lines. Author
Rept. for Sep 69-May 70,
Prepared in cooperation with State Univ. of New York. Dept. of Earth and Space Sciences.