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Three-Dimensional View of Transient Horizontal Magnetic Fields in the Photosphere

SYSNO ASEP	0350104
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Three-Dimensional View of Transient Horizontal Magnetic Fields in the Photosphere
Author(s)	Ishikawa, R. (JP) Tsuneta, S. (JP) Jurčák, Jan (ASU-R)_{RID, ORCID}
Number of authors	3
Source Title	Astrophysical Journal - ISSN 0004-637X Roč. 713, č. 2 (2010), s. 1310-1321
Number of pages	12 s.
Language	eng - English
Country	US - United States
Keywords	magnetic fields ; Sun ; photosphere ; granulation ; surface magnetism
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	000276329400051
DOI	10.1088/0004-637X/713/2/1310
Annotation	We infer the three-dimensional magnetic structure of a transient horizontal magnetic field (THMF) during its evolution through the photosphere using SIRGAUS inversion code. The SIRGAUS code allows for retrieval of information on the magnetic and thermodynamic parameters of the flux tube embedded in the atmosphere from the observed Stokes profiles. Spectropolarimetric observations of the quiet Sun at the disk center were performed with the Solar Optical Telescope on board Hinode with Fe i 630.2 nm lines. In three consecutive scans we observe an appearance and disappearance of a THMF. The results from the inversion of the Stokes spectra clearly point to the existence of a flux tube with magnetic field strength of ~400 G rising through the line-forming layer of the Fe i 630.2 nm lines. The vertical size of the tube is smaller than the thickness of the line-forming layer. The THMF has a clear Ω-shaped loop structure with the apex located near the edge of a granular cell.
Workplace	Astronomical Institute
Contact	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Year of Publishing	2011

Number of the records: 1