The Hanle effect observed in solar prominences: interpretation of the 1974-1982 Pic-du-Midi observations, and new perspectives

2003 ◽  
Vol 9 ◽  
pp. 197-197
Author(s):  
V. Bommier
Keyword(s):  
Hanle Effect ◽  
Solar Prominences

Orientation of Prominence Microstructure Relative to the Direction of the Magnetic Field

1979 ◽  
Vol 44 ◽  
pp. 97-101
Author(s):  
O. Engvold ◽  
J.L. Leroy
Keyword(s):  
Magnetic Field ◽  
The Other ◽  
Optical Observations ◽  
High Quality ◽  
Hanle Effect ◽  
Other Hand ◽  
Solar Prominences ◽  
The Magnetic Field ◽  
Good Agreement ◽  
Field Strengths

Recent measurements of the polarization of the Hel D3 line (λ5876Å) in solar prominences (Hanle effect) have been used to infer new data about prominence magnetic field (Leroy 1977, Leroy et al. 1977, Sahal-Brèchot et al. 1977). The derived field strengths are in good agreement with previous magnetographic measurements obtained at several observatories in USA (Rust 1972). Using the Hanle effect also gives the direction of the magnetic field, which is a crusial parameter in theories of prominences (Kippenhahn and Schlüter 1957, Anzer 1968, Malville 1976). Some theories require a horizontal oriented magnetic field in the prominences. High quality optical observations, on the other hand, resolve predominantly vertically oriented prominence microstructure (Dunn 1972, Engvold 1976).

Theory of the Hanle Effect; Application to the Linear Polarization of the Helium Lines in Solar Prominences

1979 ◽  
Vol 44 ◽  
pp. 93-96 ◽  
Author(s):  
V. Bommier
Keyword(s):  
Linear Polarization ◽  
Hanle Effect ◽  
Solar Prominences

This paper presents the results of the calculation of the Hanle effect for two lines of Helium I (D3, line λ = 5876 Å, infrared line λ = 10 830 Å).

Modeling of the Fine Filament Structure of Quiescent Solar Prominences

2017 ◽  
Vol 57 (8) ◽  
pp. 1018-1022 ◽  
Author(s):  
O. A. Korolkova ◽  
A. A. Solov’ev
Keyword(s):  
Fine Filament ◽  
Solar Prominences ◽  
Filament Structure

Density dependence of the Hanle effect of the 3s4p1P10 level of neutral magnesium

1979 ◽  
Vol 57 (6) ◽  
pp. 838-840
Author(s):  
F. M. Kelly ◽  
M. S. Mathur
Keyword(s):  
Density Dependence ◽  
Excited Level ◽  
Lifetime Measurement ◽  
Oscillator Strengths ◽  
Low Density ◽  
Hanle Effect

The Hanle effect in the 3s2 1S0–3s4p1P1 (2026 Å) transition of Mg I has been studied over a range of densities. The low density observations lead to an accurate lifetime measurement of the 4p1P1 excited level. Related oscillator strengths are calculated.

scholarly journals Prominence Seismology

2013 ◽  
Vol 8 (S300) ◽  
pp. 30-39 ◽  
Author(s):  
J. L. Ballester
Keyword(s):  
Solar Corona ◽  
Small Amplitude ◽  
Dense Plasma ◽  
Mhd Waves ◽  
Physical Parameters ◽  
Solar Prominences ◽  
Dynamic Structures

AbstractQuiescent solar prominences are cool and dense plasma clouds located inside the hot and less dense solar corona. They are highly dynamic structures displaying flows, instabilities, oscillatory motions, etc. The oscillations have been mostly interpreted in terms of magnetohydrodynamic (MHD) waves, which has allowed to perform prominence seismology as a tool to determine prominence physical parameters difficult to measure. Here, several prominence seismology applications to large and small amplitude oscillations are reviewed.

Hanle effect in an asymmetric CdTe/CdMnTe double quantum well

JETP Letters ◽  
1996 ◽  
Vol 63 (4) ◽  
pp. 256-261 ◽  
Author(s):  
B. P. Zakharchenya ◽  
A. V. Kudinov ◽  
Yu. G. Kusraev
Keyword(s):  
Quantum Well ◽  
Double Quantum ◽  
Hanle Effect ◽  
Double Quantum Well

scholarly journals Spin transport and Hanle effect in silicon nanowires using graphene tunnel barriers

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
O. M. J. van ’t Erve ◽  
A. L. Friedman ◽  
C. H. Li ◽  
J. T. Robinson ◽  
J. Connell ◽  
...  
Keyword(s):  
Silicon Nanowires ◽  
Spin Transport ◽  
Hanle Effect ◽  
Tunnel Barriers

scholarly journals Observational aspects of prominence oscillations

2007 ◽  
Vol 3 (S247) ◽  
pp. 152-157 ◽  
Author(s):  
Oddbjørn Engvold
Keyword(s):  
Magnetic Structure ◽  
Numerical Models ◽  
Small Scale ◽  
Solar Prominences ◽  
Scale Structures ◽  
Oscillations And Waves ◽  
Available Information ◽  
Small Scale Structures

AbstractSeismology has become a powerful tool in studies of the magnetic structure of solar prominences and filaments. Reversely, analytical and numerical models are guided by available information about the spatial and thermodynamical structure of these enigmatic structures. The present invited paper reviews recent observational results on oscillations and waves as well as details about small-scale structures and dynamics of prominences and filaments.

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