Spectroscopic observations of G-band bright points
Abstract
Imaging in the G-band is commonly used to investigate the morphological properties of small magnetic field concentrations in the solar photosphere. However the physical background, explaining the brightness of these structures, has remained unclear. Our observations add the spectroscopic point of view to this discussion. The observations at high spatial resolution are obtained with the horizontal spectrograph at the Dunn Solar Telescope of the National Solar Observatory, USA. We scanned across a pore within an active region and took spectra in three different wavelength regions (430 nm, 526 nm, 569 nm) simultaneously to G-band and broadband continuum images. We present the results and discuss the spectroscopic bright point properties in comparison to former observations and synthetic data.
- Publication:
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Solar Variability: From Core to Outer Frontiers
- Pub Date:
- December 2002
- Bibcode:
- 2002ESASP.506..397L
- Keywords:
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- Photosphere;
- Magnetic Elements