Abstract
Observations of the continuum microwave flux at 2.8 cm from quiet regions of the solar disc reveal low amplitude, quasiperiodic fluctuations at periods of 234 s and 150 s. For oscillating elements 10 arc seconds in extent, the corresponding peak to peak temperature variations are 230 K and 190 K. The energy flux in the oscillations is estimated to be 2.5x102 ergs cm2 s−1, assuming they are caused by acoustic waves. If the oscillating elements are ⩽ 1 arc second in extent, the energy flux is comparable to that required for coronal heating.
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