Connecting Global EUV Coronal Hole Measurements and Open Magnetic Field Boundaries
Abstract
This study seeks to further quantify the relationship between the boundaries of coronal holes and open magnetic field regions. Utilizing the combined observations of the SDO:AIA and STEREO:EUVI A/B instruments, nearly full coverage of the solar surface in several EUV filters is available. Using this data we have devised a routine to define global observations of coronal hole boundaries at high cadence. For comparison, several methods of global coronal magnetic field extrapolation were considered, both potential and non-potential. We considered both a direct spatio-temporal comparison of boundaries as well as associated magnetic flux quantities.Abstract (2,250 Maximum Characters): This study seeks to further quantify the relationship between the boundaries of coronal holes and open magnetic field regions. Utilizing the combined observations of the SDO:AIA and STEREO:EUVI A/B instruments, nearly full coverage of the solar surface in several EUV filters is available. Using this data we have devised a routine to define global observations of coronal hole boundaries at high cadence. For comparison, several methods of global coronal magnetic field extrapolation were considered, both potential and non-potential. We considered both a direct spatio-temporal comparison of boundaries as well as associated magnetic flux quantities.
- Publication:
-
AAS/Solar Physics Division Abstracts #44
- Pub Date:
- July 2013
- Bibcode:
- 2013SPD....44..114L