Downflows around a solar pore

Details Downflows around a solar pore Downflows around a solar pore

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..477t&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

4

Solar Pores: Velocities

Scientific paper

We used the Fabry-Perot interferometer TESOS to observe a solar pore near disk center in two photospheric spectral lines (Fe I 557.6 nm and Fe I 569.1 nm) which correspond to different heights in the atmosphere. The measurements were made during the joint campaign with the NSO/Sacramento-Peak adaptive optics system installed at the German Vacuum Tower Telescope (VTT). The Doppler-velocity measurements show an annular downflow around the outer edge of the pore. This downflow is persistent during the whole observation period, which is demonstrated in the time-averaged Dopplergrams and the corresponding azimuthally integrated and time-averaged radial velocity profiles.

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