A Search for Periodic Structure in Solar 2 CM Microwave Radiation.
Abstract
Two hundred and eighty-five hours of solar data obtained from the University of Iowa 2 cm radiometer during 1968-1969 were analyzed for evidence of the 5 min periodic chromospheric oscillations. A small shift in power from low to higher frequencies in the power spectrum of the 2 cm data was found to be correlated with H (alpha) and x-ray activity. A statistical analysis of previous works reporting evidence for the oscillations at microwave frequencies indicates that confidence in these previous results is marginal. A model for chromospheric oscillation bursts in quiescent supergranules deduced from Bhattacharyya (1972) is presented. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0762451
Entities
People
- Davis D. Sentman
Organizations
- University of Iowa