Multi-wavelength analysis of active regions using ring-diagram technique

Eclipse on the Coral Sea: Cycle 24 Ascending

物理学;天文学

Tripathy, S.C.^1 ; Jain, K.^1 ; Howe, R.^2 ; Bogart, R.^3 ; Basu, S.^4 ; Rabello-Soares, M.C.^5 ; Hill, F.^1

National Solar Observatory, Tucson, AZ 85719, United States^1

School of Physics and Astronomy, Edgbaston, Birmingham B15 2TT, United Kingdom^2

HEPL, Stanford University, Stanford, CA 94305, United States^3

Yale University, New Haven, CT 06520, United States^4

Departamento de Física, Universidad Federal de Minas Gerais, Belo Horizonte, Brazil^5

关键词: Active regions;    High resolution;    Horizontal flows;    Intensity images;    Intensity measurements;    Multi-wavelengths;    Ring diagrams;    Solar dynamics observatories;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/440/1/012026/pdf
DOI  :  10.1088/1742-6596/440/1/012026

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

With the availability of high-cadence and high-resolution Doppler and intensity images from the Solar Dynamics Observatory's Helioseismic Magnetic Imager (HMI) and Atmospheric Imager Assembly (AIA), we analyze the characteristics of high-degree solar acoustic modes in active regions. We apply the ring-diagram technique to Doppler, continuum intensity measurements from HMI, and intensity images from AIA 1600 A and 1700 A passband to examine the high-degree mode parameters and sub-surface horizontal flows.