MODE CONVERSION BETWEEN DIFFERENT RADIAL ORDERS FOR SOLAR ACOUSTIC WAVES SCATTERED BY SUNSPOTS
文献类型：期刊论文
| 作者 | Zhao, Hui1 ; Chou, Dean-Yi2
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2013-11-20 |
| 卷号 | 778期号:1 |
| 关键词 | Sun: activity Sun: helioseismology Sun: interior Sun: magnetic fields Sun: oscillations sunspots |
| 英文摘要 | We study the mode conversion between different radial orders for solar acoustic waves interacting with sunspots. Solar acoustic waves are modified in the presence of sunspots. The modification in the wave can be viewed as that the sunspot, excited by the incident wave, generates the scattered wave, and the scattered wave is added to the incident wave to form the total wave inside and around the sunspot. The wavefunction of the acoustic wave on the solar surface is computed from the cross-correlation function. The wavefunction of the scattered wave is obtained by subtracting the wavefunction of the incident wave from that of the total wave. We use the incident waves of radial order n = 0-5 to measure the scattered wavefunctions from n to another radial order n' for NOAAs 11084 and 11092. The strength of scattered waves decreases rapidly with vertical bar Delta n|, where Delta n equivalent to n' - n. The scattered waves of Delta n = +/- 1 are visible for n <= 1, and significant for n >= 2. For the scattered wave of Delta n = +/- 2, only few cases are visible. None of the scattered waves of Delta n = +/- 3 are visible. The properties of scattered waves for Delta n = 0 and Delta n not equal 0 are different. The scattered wave amplitude relative to the incident wave amplitude decreases with n for Delta n = 0, while it increases with n for Delta n not equal 0. The scattered wave amplitudes of Delta n = 0 are greater for the larger sunspot, while those of Delta n not equal 0 are insensitive to the sunspot size. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000327131700004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5873]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan |
| 推荐引用方式 GB/T 7714 | Zhao, Hui,Chou, Dean-Yi. MODE CONVERSION BETWEEN DIFFERENT RADIAL ORDERS FOR SOLAR ACOUSTIC WAVES SCATTERED BY SUNSPOTS[J]. ASTROPHYSICAL JOURNAL,2013,778(1). |
| APA | Zhao, Hui,&Chou, Dean-Yi.(2013).MODE CONVERSION BETWEEN DIFFERENT RADIAL ORDERS FOR SOLAR ACOUSTIC WAVES SCATTERED BY SUNSPOTS.ASTROPHYSICAL JOURNAL,778(1). |
| MLA | Zhao, Hui,et al."MODE CONVERSION BETWEEN DIFFERENT RADIAL ORDERS FOR SOLAR ACOUSTIC WAVES SCATTERED BY SUNSPOTS".ASTROPHYSICAL JOURNAL 778.1(2013). |
入库方式： OAI收割
来源：国家天文台
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