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Study of nuclear decays during a solar eclipse: Thule Greenland 2008 |
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| Authors: | D Javorsek II M C Brewer J B Buncher E Fischbach J T Gruenwald J Heim A W Hoft T J Horan J L Kerford M Kohler J J Lau A Longman J J Mattes T Mohsinally J R Newport M A Petrelli C A Stewart J H Jenkins R H Lee B Morreale D B Morris R Mudry D O’Keefe B Terry M A Silver P A Sturrock |
| Institution: | 1. U.S. Air Force Flight Test Center, Edwards AFB, CA, 93524, USA 2. Department of Physics, Purdue University, West Lafayette, IN, 47907, USA 3. School of Nuclear Engineering, Purdue University, West Lafayette, IN, 47907, USA 4. Department of Physics, United States Air Force Academy, USAFA, CO, 80920, USA 5. Detachment 220, Air Force Reserve Officer Training Corps, West Lafayette, IN, 47907, USA 6. Center for Space Science Astrophysics, Stanford University, Stanford, CA, 94305, USA |
| Abstract: | A new prediction technique based on logarithmic values is proposed to predict the maximum amplitude (R m) of a solar cycle from the preceding minimum aa geomagnetic index (aa min). The correlation between lnR m and lnaa min (r=0.92) is slightly stronger than that between R m and aa min (r=0.90). From this method, cycle 24 is predicted to have a peak size of R m(24)=81.7(1±13.2%). If the suggested error in aa (3 nT) before 1957 is corrected, the correlation coefficient between R m and aa min (r=0.94) will be slightly higher, and the peak of cycle 24 is predicted much lower, R m(24)=52.5±13.1. Therefore, the prediction of R m based on the relationship between R m and aa min depends greatly on the accurate measurement of aa. |
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