Computer Science
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..358...72b&link_type=abstract
Solar Polarization 4, ASP Conference Series, Vol. 358, Proceedings of the conference held 19-23 September, 2005, in Boulder, Col
Computer Science
Scientific paper
We investigate the kinematic and magnetic properties of G-band bright points in the moat of a regular sunspot. The analysis is based on vector polarimetric measurements made at the German Vacuum Tower Telescope in visible (630 nm) and infrared (1565 nm) spectral lines, complemented by high-resolution filtergrams in the G-band at 430.6 nm and the core of the Ca II H line at 396.7 nm from the Dutch Open Telescope. The spectro-polarimetric data has been inverted to derive the magnetic field properties of the observed region. We witness the formation of a G-band bright point from a patch of diffuse flux with an initial field strength of 0.4 kG. The magnetic field strength increases to 0.9 kG in the course of several minutes, accompanied by a downflow of magnetized plasma. A few minutes after the field intensification, a G-band bright point is seen at the location of the flux concentration. The formation of the bright point shows the signatures of convective collapse.
Beck Ch.
Bellot Rubio Luis Ramon
Lites Bruce W.
Schlichenmaier Rolf
Schmidt Wolfram
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