Helioseismic Observations at Stanford, 1977-1986,
Abstract
Observations of low degree modes of solar oscillation have been made at The Wilcox Solar Observatory for more than a decade. The set of observations from 1977 through 1986 are currently being examined. First test the stability of the p mode frequencies for modes of degree l=2-5 in each year. A marginally significant trend of a decrease in p mode frequencies of 0.06 microHz per year. Examined the continuity of the observed signal at 160.01 minutes. The previously reported phase stability is no longer present. However, due to uncertainties in calibration one can not exclude the reality of the reported signal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADA176239
Entities
People
- Harald M. Henning
- Philip Scherrer
Organizations
- Stanford University