Solar Cycle Variation in Solar f-Mode Frequencies and Radius |
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| Authors: | Antia HM Basu Sarbani Pintar J Pohl B |
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| Institution: | (1) Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, 400005, India;(2) Institute for Advanced Study, Olden Lane, Princeton, NJ, 08540, U.S.A.;(3) National Solar Observatory, P.O. Box 26732, Tucson, AZ, 85726-6732, U.S.A. |
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| Abstract: | Using data from the Global Oscillation Network Group (GONG) covering the period from 1995 to 1998, we study the change with solar activity in solar f-mode frequencies. The results are compared with similar changes detected from the Michelson Doppler Imager (MDI) data. We find variations in f-mode frequencies which are correlated with solar activity indices. If these changes are due to variation in solar radius then the implications are that the solar radius decreases by about 5 km from minimum to maximum activity. |
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