Helicity Evolution in Emerging Active Regions
نویسندگان
چکیده
منابع مشابه
The Origin of Helicity in the Solar Active Regions
We present calculations of helicity based on our solar dynamo model and show that the results are consistent with observational data.
متن کاملThe Origin of Helicity in Solar Active Regions
We present calculations of helicity based on our solar dynamo model and show that the results are consistent with observational data.
متن کاملEvolution of Magnetic Helicity and Energy Spectra of Solar Active Regions
We adopt an isotropic representation of the Fourier-transformed two-point correlation tensor of the magnetic field for estimating magnetic energy and helicity spectra as well as current helicity spectra of individual active regions and the change of their spectral indices with the solar cycle. The departure of the spectral index of current helicity from 5/3 is analyzed, and it is found that it ...
متن کاملChirality of Intermediate Filaments and Magnetic Helicity of Active Regions
Filaments which form either between or around active regions (ARs) are called intermediate filaments. In spite of various theoretical studies, the origin of the chirality of filaments is still uncovered. We investigated how intermediate filaments are related to their associated ARs, especially from the point of view of magnetic helicity and the orientation of polarity inversion lines (PILs). Th...
متن کاملHelicity of Solar Active Regions from a Dynamo Model
We calculate helicities of solar active regions based on the idea that poloidal flux lines get wrapped around a toroidal flux tube rising through the convection zone, thereby giving rise to the helicity. Rough estimates based on this idea compare favorably with the observed magnitude of helicity. We use our solar dynamo model based on the Babcock-Leighton a-effect to study how helicity varies w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2003
ISSN: 0004-637X,1538-4357
DOI: 10.1086/376733