Observational evidence of very long period pulsations of solar coronal microwave radiation
文献类型：期刊论文
| 作者 | Xie, RX; Wang, M; Shi, SB; Xu, C; Li, WH; Yan, YH ; Sych, RA; Altyntsev, AT
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| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 27期号:2页码:158-166 |
| 关键词 | sun : corona sun : radio emission sun : oscillations |
| 英文摘要 | On 1998 September 23, a rare event was observed with the microwave (1.0-2.0 GHz and 2.6-3.8 GHz) radio spectrograph of National Astronomical Observatories. It was a complex type-IV burst accompanied by multi-periodic pulsations, type-III bursts and type-I like noise storms. This paper focuses on the pulsation components with multiple long periods (about 7.3, 4.9, 3.7, 1.2 and 0.4 minutes). The pulsations may be due to standing waves in closed loops. Magnetohydrodynamic standing Alfven waves driven by the photospheric velocity field penetrate across the magnetic field, and this leads to the modulation of the radio radiation. These pulsations have downward motions, so it is not excluded that disturbances propagating in a closed or an open field structure may have caused the pulsations. The resonance of Alfven waves is concerned with the photospheric 5-minute oscillations, hence pulsations of very long periods may be assumed to come from driving sources in the photosphere. This can imply a possible mutual coupling between coronal magnetic loops and the photosphere. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000183228100006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8443]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Inst Solar Terr Phys, Irkutsk 664033, Russia |
| 推荐引用方式 GB/T 7714 | Xie, RX,Wang, M,Shi, SB,et al. Observational evidence of very long period pulsations of solar coronal microwave radiation[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2003,27(2):158-166. |
| APA | Xie, RX.,Wang, M.,Shi, SB.,Xu, C.,Li, WH.,...&Altyntsev, AT.(2003).Observational evidence of very long period pulsations of solar coronal microwave radiation.CHINESE ASTRONOMY AND ASTROPHYSICS,27(2),158-166. |
| MLA | Xie, RX,et al."Observational evidence of very long period pulsations of solar coronal microwave radiation".CHINESE ASTRONOMY AND ASTROPHYSICS 27.2(2003):158-166. |
入库方式： OAI收割
来源：国家天文台
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