Determining the Plasma Parameters of Solar Prominences

确定日珥的等离子体参数

• 批准号: 25800108
• 负责人: HILLIER Andrew
• 金额: $ 2.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2013
• 资助国家: 日本
• 起止时间: 2013-04-01 至 2015-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25800108/
• 关键词: Numerical techniques; Statistical analysis; Partially ionized plasma; 国際研究者交流(イギリス); Code Development; New analysis methods; 国際研究者交流（アメリカとイギリス）

Over the past 1 year I have achieved the following:1) Determination of turbulent velocity spectra in prominences. Finding evidence of the energy injection scales and of both a cascade and inverse cascade of energy. Both the famous turbulent spectra: Kolmogorov and Kraichnan-Iroshnikov were discovered.2) Full completion of the (PIP) code, a coding project led by myself. This is now ready and is being used for astrophysical research. New numerical methods were developed to improve the use of this code in astrophysical settings.3) Discovery of ion-neutral separation as a result of the MHD Kelvin-Helmholtz instability in the partially ionized plasma of a prominence. In many case I have shown that an ion-neutral centrifuge is formed, creating a vortex with a strongly ionized core.4) Model of slow-shock formation and dynamical evolution in a partially ionized plasma. The shocks show an interesting structure, with the formation of an actual shock highly dependent on the hydrodynamic Mach number.

在过去的一年里，我完成了以下工作：1)日冕湍流速度谱的测定。寻找能量注入规模以及能量级联和逆级联的证据。两个著名的湍流谱：Kolmogorov和Kraichnan-Iroshnikov都被发现了。2)完全完成了我领导的编码项目(PIP)。它现在已经准备好，正在用于天体物理研究。发展了新的数值方法，以改进该程序在天体物理环境中的使用。3)在日冕部分电离等离子体中发现了由于MHD开尔文-亥姆霍兹不稳定性而导致的离子-中性分离。在许多情况下，我已经证明了离子中性离心机的形成，产生了一个具有强电离核心的涡旋。4)部分电离等离子体中慢激波形成和动态演化的模型。激波表现出一种有趣的结构，实际激波的形成高度依赖于流体动力马赫数。

项目成果

SUPERFLARE OCCURRENCE AND ENERGIES ON G-, K-, AND M-TYPE DWARFS

• DOI: 10.1088/0004-637x/792/1/67
• 发表时间: 2014-05
• 期刊: The Astrophysical Journal
• 作者: S. Candelaresi;Andrew Hillier;Hiroyuki Maehara;Axel Brandenburg;Kazunari Shibata

A STATISTICAL STUDY OF TRANSVERSE OSCILLATIONS IN A QUIESCENT PROMINENCE

• DOI: 10.1088/2041-8205/779/2/l16
• 发表时间: 2013-10
• 期刊: The Astrophysical Journal Letters
• 作者: Andrew Hillier;Richard Morton;R. Erdélyi

A study of the dynamics of the 3D Kelvin-Helmholtz instability in a partially ionised plasma

部分电离等离子体中 3D 开尔文-亥姆霍兹不稳定性的动力学研究

• 发表时间: 2014
• 作者: Andrew Hillier;Naoki Nakamura;Shinsuke Takasao;Harufumi Tamazawa & Akito Davis Kawamura
• 通讯作者: Harufumi Tamazawa & Akito Davis Kawamura

A statistical study of transverse waves in a quiescent prominence

静止日珥横波的统计研究

• 发表时间: 2013
• 作者: Andrew Hillier;Richard Morton & Robertus Erdelyi
• 通讯作者: Richard Morton & Robertus Erdelyi

THE GENERATION AND DAMPING OF PROPAGATING MHD KINK WAVES IN THE SOLAR ATMOSPHERE

太阳大气中传播的 MHD 扭结波的产生和阻尼

• DOI: 10.1088/0004-637x/784/1/29
• 发表时间: 2014
• 期刊: The Astrophysical Journal
• 作者: Morton R