The magnetic helicity sign of filament chirality
Document Type
Article
Publication Date
9-10-2000
Abstract
A solar prominence has either dextral or sinistral chirality depending on its axial field direction. We determine the magnetic helicity sign of filaments using high-resolution observations performed by Transition Region And Coronal Explorer. At EUV wavelengths, filaments sometimes appear as mixtures of bright threads and dark threads. This characteristic has enabled us to discern overlying threads and underlying ones and to determine the sign of magnetic helicity based on the assumption that the helicity sign of two crossing thread segments is the same as that of the filament. Our results support the notion that dextral filaments have negative magnetic and that sinistral filaments have positive helicity.
Identifier
0034633074 (Scopus)
Publication Title
Astrophysical Journal
External Full Text Location
https://doi.org/10.1086/312880
e-ISSN
15384357
ISSN
0004637X
First Page
L115
Last Page
L118
Issue
2 PART 2
Volume
540
Grant
NAG5-7837
Fund Ref
National Aeronautics and Space Administration
Recommended Citation
Chae, Jongchul, "The magnetic helicity sign of filament chirality" (2000). Faculty Publications. 15552.
https://digitalcommons.njit.edu/fac_pubs/15552