KMS National Astronomical Observatories, CAS
SCATTERING MATRIX FOR THE INTERACTION BETWEEN SOLAR ACOUSTIC WAVES AND SUNSPOTS. I. MEASUREMENTS | |
Yang, Ming-Hsu1; Chou, Dean-Yi1; Zhao, Hui2 | |
2017-01-20 | |
Source Publication | ASTROPHYSICAL JOURNAL |
Volume | 835Issue:1 |
Abstract | 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). |
Subtype | Article |
Keyword | Sun: Activity Sun: Helioseismology Sun: Interior Sun: Magnetic Fields Sun: Oscillations Sunspots |
WOS Headings | Science & Technology ; Physical Sciences |
Funding Organization | 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) |
DOI | 10.3847/1538-4357/835/1/102 |
WOS Keyword | RING-DIAGRAM ANALYSIS ; P-MODE WAVES ; ACTIVE REGIONS ; PHENOMENOLOGICAL MODEL ; SUBSURFACE STRUCTURES ; EMISSIVITY REDUCTION ; LOCAL SUPPRESSION ; MAGNETIC-FIELDS ; PHASE-SHIFTS ; TRAVEL-TIME |
Indexed By | SCI |
Language | 英语 |
Funding Organization | 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 Research Area | Astronomy & Astrophysics |
WOS Subject | Astronomy & Astrophysics |
WOS ID | WOS:000393455400102 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.bao.ac.cn/handle/114a11/8274 |
Collection | 太阳物理研究部 |
Affiliation | 1.Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan 2.Chinese Acad Sci, Natl Astron Observ, Beijing 200012, Peoples R China |
Recommended Citation 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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