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Evolution of small-scale features at the penumbra-photospere border
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SYSNO ASEP 0125043 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Evolution of small-scale features at the penumbra-photospere border Author(s) Sobotka, Michal (ASU-R) RID, ORCID
Muller, R. (FR)
Bonet, J. A. (FR)
Márquez, I. (ES)Source Title SOLMAG 2002. Proceedings of the magnetic coupling of the solar atmosphere euroconference and IAU colloquium 188 / Sawaya-Lacoste H.. - Noordwijk : ESA Publication Division, 2002 Pages s. 579-582 Number of pages 4 s. Action SOLMAG 2002. Colloquium of the International Astronomical Union /188./ Event date 11.06.2002-15.06.2002 VEvent location Santorini Country GR - Greece Event type WRD Language eng - English Country NL - Netherlands Keywords sun activity ; granulation ; sunspots Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects GA205/01/0658 GA ČR - Czech Science Foundation (CSF) KSK2043105 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z1003909 - ASU-R Annotation A time series of images restored by the phase diversity method was used to study horizontal motions of granules in the vicinity of a sunspot and evolution of penumbral grains. Organized motions of local divergence centres directed away from the spot were found. Some outward-moving penumbral grains were observed to escape from the penumbra surrounding granulation. Workplace Astronomical Institute Contact Anežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2003
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