Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001soph..200...11n&link_type=abstract
Solar Physics, v. 200, Issue 1/2, p. 11-22 (2001).
Physics
4
Scientific paper
The emergence and evolution of large granules shows the granular dynamics particularly well. We therefore investigate the time dependence of the convective flows within a regular and an exploding granule. The observational material for this study was taken at the center of the solar disk with the German VTT in Izaña (Tenerife, Spain) during an observing campaign in the year 1994. It consists of series of spectrograms of high spatial resolution, which were digitized and processed with wavelet techniques. Among other features, our data show the dynamical portrait of a regular and an exploding granule. We can follow their temporal evolution over more than 12 min. Using absorption lines of different strength we are able to see the dynamical change of both granules at several heights within the first 200 km above τ_5000=1. The observations reveal significant changes of the convective flow of both granules over time as well as over height, which are discussed in detail.
Hammer Reiner
Nesis Anastasios
Roth Marcel
Schleicher Helmhold
Soltau Dirk
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