| Observational evidence of very long period pulsations of solar coronal microwave radiation | |
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; Xie, RX (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | CHINESE ASTRONOMY AND ASTROPHYSICS
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| 2003-04 | |
| 卷号 | 27期号:2页码:158-166 |
| DOI | 10.1016/S0275-1062(03)00037-7 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Sun : Corona Sun : Radio Emission Sun : Oscillations |
| 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. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0275-1062 |
| URL | 查看原文 |
| WOS记录号 | WOS:000183228100006 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | SLOW MAGNETOACOUSTIC WAVES ; RADIO PULSATIONS ; OSCILLATIONS ; FLARE ; LOOPS ; REGION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5609 |
| 专题 | 射电天文研究组 |
| 通讯作者 | Xie, RX (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. |
| 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 |
| 第一作者单位 | 中国科学院云南天文台 |
| 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.,...&Xie, RX .(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. |
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| Observational eviden（720KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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