Different spatial structures between network regions and active regions indicated by TRACE 171 Å observation

By comparing TRACE 171 Å observations with photospheric magnetograms, we find that the root of TRACE 171 Å emission is centered in magnetic elements in simultaneous Huairou photospheric magnetogram and the luminosity of TRACE 171 Å emission is not always in proportion to the strength of the correspo...

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Bibliographic Details
Published in:Solar physics 1999-12, Vol.190 (1-2), p.79
Main Authors: Zhang, M, Zhang, Hq, Ai, Gx, Wang, Hn
Format: Article
Language:English
Subjects:
Emissions
Magnetic fields
Solar physics
Sun
Online Access:Get full text
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Summary:By comparing TRACE 171 Å observations with photospheric magnetograms, we find that the root of TRACE 171 Å emission is centered in magnetic elements in simultaneous Huairou photospheric magnetogram and the luminosity of TRACE 171 Å emission is not always in proportion to the strength of the corresponding photospheric magnetic field. While TRACE emission from an active region shows an obvious upward extension as a whole, fibril-like emissions from network elements show little extension along the structure from the root of each emission to 40'' higher up in the solar atmosphere. Together with previous studies by Zhang and Zhang (1999, 2000), it is suggested that the magnetic fields in active regions and quiet-Sun regions present different spatial structures from the solar photosphere to the chromosphere and maybe even in the corona.[PUBLICATION ABSTRACT]
ISSN:0038-0938
1573-093X
DOI:10.1023/A:1005276217089