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SCATTERING MATRIX FOR THE INTERACTION BETWEEN SOLAR ACOUSTIC WAVES AND SUNSPOTS. I. MEASUREMENTS
Yang, Ming-Hsu1; Chou, Dean-Yi1; Zhao, Hui2
2017-01-20
发表期刊ASTROPHYSICAL JOURNAL
卷号835期号:1
摘要Assessing the interaction between solar acoustic waves and sunspots is a scattering problem. The scattering matrix elements are the most commonly used measured quantities to describe scattering problems. We use the wavefunctions of scattered waves of NOAAs 11084 and 11092 measured in the previous study to compute the scattering matrix elements, with plane waves as the basis. The measured scattered wavefunction is from the incident wave of radial order n to the wave of another radial order n', for n = 0-5. For a time-independent sunspot, there is no mode mixing between different frequencies. An incident mode is scattered into various modes with different wavenumbers but the same frequency. Working in the frequency domain, we have the individual incident plane-wave mode, which is scattered into various plane-wave modes with the same frequency. This allows us to compute the scattering matrix element between two plane-wave modes for each frequency. Each scattering matrix element is a complex number, representing the transition from the incident mode to another mode. The amplitudes of diagonal elements are larger than those of the off-diagonal elements. The amplitude and phase of the off-diagonal elements are detectable only for n-1 <= n' <= n + 1and -3 Delta k <= delta k(x) <= 3 Delta k, where delta k(x) is the change in the transverse component of the wavenumber and Delta k = 0.035 rad Mm(-1).
文章类型Article
关键词Sun: Activity Sun: Helioseismology Sun: Interior Sun: Magnetic Fields Sun: Oscillations Sunspots
WOS标题词Science & Technology ; Physical Sciences
资助者MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3)
DOI10.3847/1538-4357/835/1/102
关键词[WOS]RING-DIAGRAM ANALYSIS ; P-MODE WAVES ; ACTIVE REGIONS ; PHENOMENOLOGICAL MODEL ; SUBSURFACE STRUCTURES ; EMISSIVITY REDUCTION ; LOCAL SUPPRESSION ; MAGNETIC-FIELDS ; PHASE-SHIFTS ; TRAVEL-TIME
收录类别SCI
语种英语
资助者MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3) ; MOST of ROC(NOST-105-21120-M-007-001-MY3)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000393455400102
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8274
专题太阳物理研究部
作者单位1.Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan
2.Chinese Acad Sci, Natl Astron Observ, Beijing 200012, Peoples R China
推荐引用方式
GB/T 7714
Yang, Ming-Hsu,Chou, Dean-Yi,Zhao, Hui. SCATTERING MATRIX FOR THE INTERACTION BETWEEN SOLAR ACOUSTIC WAVES AND SUNSPOTS. I. MEASUREMENTS[J]. ASTROPHYSICAL JOURNAL,2017,835(1).
APA Yang, Ming-Hsu,Chou, Dean-Yi,&Zhao, Hui.(2017).SCATTERING MATRIX FOR THE INTERACTION BETWEEN SOLAR ACOUSTIC WAVES AND SUNSPOTS. I. MEASUREMENTS.ASTROPHYSICAL JOURNAL,835(1).
MLA Yang, Ming-Hsu,et al."SCATTERING MATRIX FOR THE INTERACTION BETWEEN SOLAR ACOUSTIC WAVES AND SUNSPOTS. I. MEASUREMENTS".ASTROPHYSICAL JOURNAL 835.1(2017).
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