Microwave type III-like bursts as possible signatures of magnetic reconnection
文献类型：期刊论文
| 作者 | Altyntsev, A. T.; Grechnev, V. V.; Meshalkina, N. S.; Yan, Y.
|
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 242期号:1-2页码:111-123 |
| 关键词 | Sun radio radiation Sun flares |
| 英文摘要 | Magnetic reconnection is commonly accepted to play a key role in flare energy release, but only poor information about the main characteristics of this process is available so far. An intrinsic feature of reconnection is plasma density enhancement in current sheets. A unique method to detect this effect is provided by analysis of drifting bursts, whose emission frequency is close to the local Langmuir frequency or its harmonics. With this purpose, we analyze a series of several tens of drifting microwave bursts during the 30 March 2001 flare. The burst drift rates range from -10 to 20 GHz s(-1). Using one-dimensional scans recorded with the SSRT interferometer at two different frequencies near 5.7 GHz, we have measured relative positions of burst sources and their velocities along a flare loop revealed from soft X-ray and extreme-ultraviolet images. It is argued that the contribution of the increasing density effect into the observed frequency drift rates is about 6 GHz s(-1), which is shown to be consistent with theoretical models of magnetic reconnection with reasonable boundary conditions. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000248137000009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7318]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Inst Solar Terrestrial Phys, Irkutsk 664033, Russia 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Altyntsev, A. T.,Grechnev, V. V.,Meshalkina, N. S.,et al. Microwave type III-like bursts as possible signatures of magnetic reconnection[J]. SOLAR PHYSICS,2007,242(1-2):111-123. |
| APA | Altyntsev, A. T.,Grechnev, V. V.,Meshalkina, N. S.,&Yan, Y..(2007).Microwave type III-like bursts as possible signatures of magnetic reconnection.SOLAR PHYSICS,242(1-2),111-123. |
| MLA | Altyntsev, A. T.,et al."Microwave type III-like bursts as possible signatures of magnetic reconnection".SOLAR PHYSICS 242.1-2(2007):111-123. |
入库方式： OAI收割
来源：国家天文台
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