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http://hdl.handle.net/2248/3746| Title: | Study of Longperiod Global Oscillations of Sun Through Spherical Harmonic Fourier Analysis of Sunspot Activity |
| Authors: | Gokhale, M. H |
| Keywords: | Global Oscillations Sunspots |
| Issue Date: | 1988 |
| Publisher: | International Astronomical Union |
| Citation: | IAU Symposium, No. 123, pp. 219 - 222 |
| Abstract: | A spherical harmonic Fourier analysis of the maximum areas of sunspot groups listed in Ledgers I and II of Greenwich photoheliographic results for 1933 - 1954 yield significant peaks at the 11 y periodicity for some spherical harmonic modes: especially the mode (l = 6, m = 0). A similar analysis of the daily areas of the spotgroups during 1944 - 1954 yields 11 y periodicity peaks only for some non-axisymmetric modes. These results suggest that the sunspot activity may be physically related to long period global oscillations of the sun. |
| URI: | http://hdl.handle.net/2248/3746 |
| ISSN: | 0074-1809 |
| Appears in Collections: | IIAP Publications |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Study of Longperiod Global Oscillations of Sun | 249.03 kB | Adobe PDF |  View/Open |
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