Relationship between Photospheric and Chromospheric Ω(θ) deduced by Temporarily and Spatially Correlated Tracers
Abstract
An analysis of the spatially and temporally correlated photospheric and chromospheric features lasting 2-9 days is used to describe the kinematic characteristics of a young active region in two levels of the solar atmosphere. Daily K spectrograms served as a basis for an analysis of faculae occurring from Jan. 1972-Nov. 1977. Consideration was limited to phenomena of the same age and geometric center-of-mass overlapping within 2 deg. Daily averages were calculated of the velocities of the sunspot groups and of the K faculae, using 5 deg latitude strips for scale, and weighting the calculations for age. Similar behavior of spatially and temporally correlated tracers indicated a magnetic linkage exists between two layers in the same active region. Active regions of different ages displayed different velocities. Data on the triggering mechanism of solar transients are suggested to be available from analysis of twisting and shearing due to the motions of sunspots in different active regions which are magnetically linked.
- Publication:
-
Sun and Planetary System
- Pub Date:
- 1982
- DOI:
- 10.1007/978-94-009-7846-1_14
- Bibcode:
- 1982ASSL...96...71Z
- Keywords:
-
- Chromosphere;
- Photosphere;
- Solar Atmosphere;
- Sunspots;
- Data Reduction;
- Faculae;
- Solar Magnetic Field;
- Spatial Distribution;
- Spectral Correlation;
- Temporal Distribution;
- Solar Physics