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Helioseismic observations at stanford, 1977-1986
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Henning, H. M. Scherrer, P. H. |
| Copyright Year | 1986 |
| Description | Observations of low degree modes of solar oscillations were made at the Wilcox Solar Observatory for more than a decade. The set of observations from 1977 through 1986 are reexamined. The stability of the p-mode frequencies for modes of degree l=2-5 in each year is tested. A marginally significant trend of a decrease in p-mode frequencies of 0.06 microHz per year is found. The continuity of the observed signal at 160.01 minutes are also examined. It was found that the previously reported phase stability is no longer present. However, due to uncertainties in calibration, the reality of the reported signal can not be excluded. |
| File Size | 463638 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870004803 |
| Archival Resource Key | ark:/13960/t0kt1kc34 |
| Language | English |
| Publisher Date | 1986-11-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Helioseismology Magnetic Flux Solar Diameter Phase Shift Least Squares Method Solar Oscillations Solar Magnetic Field Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
