[Previous] | [Session 20] | [Next]
T. E. Berger (Lockheed Martin Solar and Astrophysics Lab), L. H. M. Rouppe van der Voort (Institute of Theoretical Astrophysics, University of Oslo), M. G. Lofdahl (The Institute for Solar Physics of the Royal Swedish Academy of Sciences), M. Carlsson, A. Fossum, V. H. Hansteen, E. Marthinussen (Institute of Theoretical Astrophysics, University of Oslo), A. M. Title (Lockheed Martin Solar and Astrophysics Lab), G. Scharmer (The Institute for Solar Physics of the Royal Swedish Academy of Sciences)
New observations of solar magnetic elements in a remnant active region plage near disk center are presented. The observations were taken with the Swedish 1-meter Solar Telescope on La Palma. We examine a single 430.5 nm G-band filtergram that resolves ~70 km (0.''1) structures and find new forms of magnetic structures in this particular region. A simultaneous Ca II H-line image is used to examine the low-chromosphere of network elements. A simultaneous Fe I 630.25 nm magnetogram that resolves structures as small as 120 km (0.''18) FWHM with a flux sensitivity of approximately 130~Mx~cm-2 quantifies the magnetic structure of the region. A Ni I 676.8~nm Dopplergram establishes relative velocity patterns associated with the network features with an accuracy of about 300 m s-1. Magnetic flux in this region as seen in both the magnetogram and the G-band image is typically structured into larger, amorphous, ``ribbons'' with a wide range of flux density values, rather than isolated kilogauss flux tubes. We also present filtergrams and magnetograms of magnetic elements at the solar limb showing that solar faculae are resolved into bright granular walls that appear to project 350 to 500 km above the photosphere.
[Previous] | [Session 20] | [Next]
Bulletin of the American Astronomical Society, 36 #2
© YEAR. The American Astronomical Soceity.