Magnetic Properties of Metric Noise Storms Associated with Coronal Mass Ejections
文献类型：期刊论文
| 作者 | YaYuan Wen; JingXiu Wang ; YuZong Zhang
|
| 刊名 | Chinese Journal of Astronomy and Astrophysics
 |
| 出版日期 | 2007 |
| 卷号 | 7期号:2页码:265 |
| ISSN号 | 1009-9271 |
| 英文摘要 | Using Nancay Radioheliograph (NRH) imaging observations, combined with SOHO/Michelson Doppler Imager (MDI) magnetogram observations and coronal magnetic field extrapolation, we studied the magnetic nature of metric noise storms that are associated with coronal mass ejections (CMEs). Four events are selected: the events of 2000 July 14, 2001 April 26, 2002 August 16 and 2001 March 28. The identified noise storm sources cover or partially cover the active regions (ARs), but the centers of storm sources are offset from the ARs. Using extrapolated magnetic field lines, we find that the noise storm sources trace the boundary between the open and closed field lines. We demonstrate that the disappearance of noise storm source is followed by the appearance of the burst source. The burst sources spread on the solar disk and their distributions correspond to the extent of the CME in LASCO C2 field of view. All the SOHO/Extreme Ultraviolet Imaging Telescope (EIT) dimmings associated with noise storm sources are located at the periphery of noise storms where the magnetic lines of force were previously closed and low-lying. When the closed field becomes partially or fully open, the basic configurations of noise storm sources are changed, then the noise storm sources are no longer observed. These observations provide the information that the variations of noise storms manifest the restructuring or reconfiguring of the coronal magnetic field. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/44464]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | YaYuan Wen,JingXiu Wang,YuZong Zhang. Magnetic Properties of Metric Noise Storms Associated with Coronal Mass Ejections[J]. Chinese Journal of Astronomy and Astrophysics,2007,7(2):265. |
| APA | YaYuan Wen,JingXiu Wang,&YuZong Zhang.(2007).Magnetic Properties of Metric Noise Storms Associated with Coronal Mass Ejections.Chinese Journal of Astronomy and Astrophysics,7(2),265. |
| MLA | YaYuan Wen,et al."Magnetic Properties of Metric Noise Storms Associated with Coronal Mass Ejections".Chinese Journal of Astronomy and Astrophysics 7.2(2007):265. |
入库方式： OAI收割
来源：国家天文台
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