Observational evidence of very long period pulsations of solar coronal microwave radiation
文献类型：期刊论文
| 作者 | Xie RX(谢瑞祥)1 ; Wang M(汪敏)1; Shi SB(施硕彪)1; Xu C(许春)1; Li WH(李维华)2; Yan, YH2; Sych, RA3; Altyntsev, AT3
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| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2003-04 |
| 卷号 | 27期号:2页码:158-166 |
| 关键词 | sun : corona sun : radio emission sun : oscillations |
| ISSN号 | 0275-1062 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Xie, RX (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. |
| 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SLOW MAGNETOACOUSTIC WAVES ; RADIO PULSATIONS ; OSCILLATIONS ; FLARE ; LOOPS ; REGION |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0275106203000377 |
| 语种 | 英语 |
| WOS记录号 | WOS:000183228100006 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5609]  |
| 专题 | 云南天文台_射电天文研究组 |
| 作者单位 | 1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 3.Institute of Solar-Terrestrial Physics, 126 Lermontov St., 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：云南天文台
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