The correlation between features in the solar spectrum near Mg II and photospheric magnetic fields
Abstract
During the HRTS-9 flight, spectrograms and spectroheliograms where obtained of the quiet sun, quiet limb, plage, and sunspots. Previous analysis of these observations required the correction of a small set of spectra for instrumental distortions and the absolute intensity calibration. We have applied these corrections to a larger portion of the HRTS-9 observations where the spectrograph slit was rastered across a small region of the sun along the solar equator. This set of corrected spectrograms has allowed us to generate high spatial and spectral resolution spectroheliograms of the observed quiet and active portions of the sun. In addition, with use of a magnetogram taken while the flight was in progress we have examined the relationship between the photospheric magnetic field and both Mg II emission at 280 nm and absorption features in the nearby solar spectrum due to both neutral and singly ionized species. In this presentation we will present our high resolution spectroheliograms as well as results showing the relationship between the magnetic field and several specific spectral features.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2005
- Bibcode:
- 2005AGUSMSP41B..06M
- Keywords:
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- 7507 Chromosphere;
- 7536 Solar activity cycle (2162);
- 7537 Solar and stellar variability;
- 7549 Ultraviolet emissions