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Solar Eclipse Observation On May 21, 2012 From Jvla, Shaheda Begum Shaik
Solar Eclipse Observation On May 21, 2012 From Jvla, Shaheda Begum Shaik
Theses
The annular solar eclipse occurred on May 21, 2012 is studied using the radio data from the Jansky Very Large Array (JVLA), Sorrocco, Mexico. The eclipse is observed in the solar minimum activity period of solar cycle 24. The centimeter wavelength observation of the Sun's surface during the solar eclipse helps in determining the spatially well resolved features not obtained by the man made advanced technology. Even though, the activity on the Sun is observed to be low in the period of eclipse, the study provides a good opportunity to understand the quiet Sun features in the regions occulted by …
Validation Of Solar Flare Forecasting & Evolution Of Magnetic Helicity Of Two Active Regions, Qin Li
Validation Of Solar Flare Forecasting & Evolution Of Magnetic Helicity Of Two Active Regions, Qin Li
Theses
This thesis includes two components: (1) Validation of the NJIT flare-forecasting model that was established in recent years is carried out based on the statistical correlation between solar magnetic parameters and flare productivity of active regions (ARs). 378 ARs are examined, comparing observation with prediction. It is found that the accuracy rate to some extent decreases with the level of flares. (2) The temporal evolution of the relative magnetic helicity of two ARs, AR 11072 and 11158 is investigated. The former is flare-quiet while the latter is flare-productive over the 5-day observation period. It is found that for both regions, …