Accession Number:

AD0762451

Title:

A Search for Periodic Structure in Solar 2 CM Microwave Radiation.

Descriptive Note:

Master's thesis,

Corporate Author:

IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s):

Report Date:

1973-05-01

Pagination or Media Count:

88.0

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

Subject Categories:

  • Astrophysics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE