Scaling Properties of Solar Magnetic and Velocity Fields

太阳磁场和速度场的标度特性

• 批准号: 9628882
• 负责人: Ana Cadavid
• 金额: $ 17.74万
• 依托单位: The University Corporation, Northridge
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628882&HistoricalAwards=false
• 关键词: Scaling; Properties; Solar; Magnetic; Velocity

The PI will study the scaling symmetry of spatial and temporal structure of solar magnetic and velocity fields to trace their physical origins in the convective solar plasma. First, she will investigate the range of physical scales and magnetic filed strengths over which multifractal symmetry applies on the Sun. Wavelet transforms will localize image sites where the magnetic field strength appears to show singular behavior. The PI will observe the relation between these sites and unresolved magnetic structures, such as flux-tubes. She will then distinguish between zero or transverse field configurations versus rapidly reversing fields using the scaling symmetry of fluctuations in the direction of the magnetic vector field. By examining Doppler images, the PI will determine the form of scaling and, thus, of the transport in the photosphere. Finally, the PI will examine a diverse array of effective models for the generation of observed magnetic field structuring and scaling symmetry.

PI将研究太阳磁场和速度场的空间和时间结构的尺度对称性，以追踪它们在对流太阳等离子体中的物理起源。 首先，她将研究多重分形对称性应用于太阳的物理尺度和磁场强度的范围。 小波变换将定位磁场强度表现出奇异行为的图像位置。 PI 将观察这些位点与未解析的磁结构（例如磁通管）之间的关系。 然后，她将利用磁矢量场方向波动的尺度对称性来区分零场或横向场配置与快速反转场。 通过检查多普勒图像，PI 将确定缩放的形式，从而确定光球层中的传输。 最后，PI 将检查各种有效模型，以生成观察到的磁场结构和尺度对称性。