Magnetic Field and Plasma Diagnostics from Coordinated Prominence Observations

被引：0

作者：

Schmieder, B. ^{[1
]}

Levens, P. ^{[2
]}

Dalmasse, K. ^{[3
]}

Mein, N. ^{[1
]}

Mein, P. ^{[1
]}

Lopez-Ariste, A. ^{[4
]}

Labrosse, N. ^{[2
]}

Heinzel, P. ^{[5
]}

机构：

[1] Observ Paris, LESIA, Meudon, France

[2] Univ Glasgow, Glasgow, Lanark, Scotland

[3] Natl Ctr Atmospher Res, CISL HAO, POB 3000, Boulder, CO 80307 USA

[4] IRAP, Toulouse, France

[5] Acad Sci Czech Republic, Inst Astron, CS-25165 Ondrejov, Czech Republic

来源：

GROUND-BASED SOLAR OBSERVATIONS IN THE SPACE INSTRUMENTATION ERA | 2016年 / 504卷

关键词：

SOLAR PROMINENCES; QUIESCENT PROMINENCES; RADIATIVE-TRANSFER; MG II; TORNADOES; HINODE; LINES;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the magnetic field in prominences from a statistical point of view, by using THEMIS in the MTR mode, performing spectropolarimetry of the He I D-3 line. Combining these measurements with spectroscopic data from IRIS, Hinode/EIS as well as ground-based telescopes, such as the Meudon Solar Tower, we infer the temperature, density, and flow velocities of the plasma. There are a number of open questions that we aim to answer: -What is the general direction of the magnetic field in prominences? Is the model using a single orientation of magnetic field always valid for atypical prominences? -Are prominences in a weak environment field dominated by gas pressure? -Measuring the Doppler shifts in Mg II lines (with IRIS) and in Ha can tell us if there are substantial velocities to maintain vertical rotating structures, as has been suggested for tornado-like prominences. We present here some results obtained with different ground-based and space-based instruments in this framework.

引用

页码：119 / 124

页数：6

共 26 条

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