Demonstration of HelioFlux: an IDL tool applied to calculation of magnetic flux or intensity of solar features
Abstract
HelioFlux, a user-friendly IDL based tool developed at Helio Research, facilitates the measurement of changes in magnetic flux or spectral brightness over an assigned region on the solar surface, using data sets from SOHO, STEREO, SDO and ground based observatories. HelioFlux aids in extracting new science results from enormous data sets such as those delivered by SDO and future solar missions.
As an example we applied HelioFlux to track the evolution of magnetic flux between a coronal hole and a filament channel over 8 solar rotations. In this time multiple filament eruptions occurred from this channel at the average rate of 2 per solar rotation. In addition, using potential field source surface extrapolation (PFSS), we calculated time series of the distribution of the open magnetic field lines in the coronal hole starting before the birth of the long-lived filament channel up until after the channel was completely destroyed by the emergence a super cluster of active regions. We found evidence of the mutual influence between the coronal hole and filament channel which allow them to survive together for more than a half year. The data and measurements are consistent with the view that coronal hole magnetic fields are generated and organized by hydromagnetic transport processes at/near the solar surface.- Publication:
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Solar Heliospheric and INterplanetary Environment (SHINE 2011)
- Pub Date:
- July 2011
- Bibcode:
- 2011shin.confE.171P