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Evolution of Physical Characteristics of Umbral Dots and Penumbral Grains

SYSNO ASEP	0335734
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Evolution of Physical Characteristics of Umbral Dots and Penumbral Grains
Title	Vývoj fyzikálních charakteristik umbrálních bodů a penumbrálních zrn
Author(s)	Sobotka, Michal (ASU-R)_{RID, ORCID} Jurčák, Jan (ASU-R)_{RID, ORCID}
Source Title	Astrophysical Journal - ISSN 0004-637X Roč. 694, č. 2 (2009), s. 1080-1084
Number of pages	5 s.
Language	eng - English
Country	US - United States
Keywords	Sun ; photosphere ; sunspots
Subject RIV	BN - Astronomy, Celestial Mechanics, Astrophysics
R&D Projects	IAA300030808 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z10030501 - ASU-R (2005-2011)
UT WOS	000264538900028
DOI	10.1088/0004-637X/694/2/1080
Annotation	The evolution of central and peripheral umbral dots (CUDs and PUDs) and penumbral grains (PGs) was traced in a time series of maps of temperature, Doppler velocities, and magnetic field vector in a sunspot. It was found that PGs and PUDs are of a similar physical nature. They appear in regions with a weaker and more horizontal magnetic field and reach the photosphere, while CUDs are formed in deeper layers.
Workplace	Astronomical Institute
Contact	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Year of Publishing	2010

Number of the records: 1