Solar Acoustic Oscillations Observations in SDO AIA and HMI around AR 12192
Abstract
Solar flares are dynamic objects occurring randomly and yet unannounced in nature. In order to find an efficient detection method, we require a greater breadth of knowledge of the system. One such mode is to observe flares in different frequency bands at different depths and study their temporal evolution through the flaring event. In this project we obtain acoustic observations of an X3 flare occurring on October 24, 2014 at 21:41UT. We employ the study of active regions, near sunspots, in which flaring activity is taking place. Our wavelet analysis utilizes time series data to create Fourier power spectra of individual pixels spatially resolved around the flare region, to study the frequency bands. In order to study the power distribution in regions around the flare and compare the measurements to magnetograms to search for any correlation, we combine observations of oscillations in three SDO AIA wavelengths: the 1600Å, 1700 Å and 304Å, and combine them with HMI data. We then study how the frequency distribution evolves temporally by constructing a Power Map Movie (PMM) of the regions. From these PMMs we can partition sub-regions in our main flaring region and take a survey of the oscillations for each frequency band.
- Publication:
-
SDO 2016: Unraveling the Sun's Complexity
- Pub Date:
- October 2016
- Bibcode:
- 2016usc..confE..89M
- Keywords:
-
- SDO;
- SDO 2016;
- Solar Dynamic Observatory;
- SDO-2016;
- SDO Workshop;
- SDO 2016: Unraveling the Sun's Complexity