Pulsations of microwave flaring emission at low and high frequencies
文献类型：期刊论文
| 作者 | Reznikova, V. E.; Melnikov, V. F.; Su, Y.; Huang, G. |
| 刊名 | ASTRONOMY REPORTS
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 51期号:7页码:588-596 |
| 关键词 | CORONAL LOOP OSCILLATIONS SOLAR RADIO-BURSTS GYROSYNCHROTRON EMISSION PLASMA ELECTRONS SUMER |
| ISSN号 | 1063-7729 |
| 英文摘要 | A wavelet analysis of the flare-intensity variations has been carried out for a solar flare observed with the Nobeyama Radioheliograph at 17 and 34 GHz and the spectrometer of Purple Mountain Observatory at 4.5-7.5 GHz. The signals contain a well-pronounced periodicity with a period of P = 14-17 s and stable, coherent behavior at frequencies higher and lower than the peak frequency. We simulated the modulation of the gyrosynchrotron emission by fast sausage magnetoacoustic oscillations for the cases of low and high plasma density in the radio source. The synchronism of the pulsations at high and low frequencies can be realized only in the case of high plasma density, when the low-frequency turnover of the microwave spectrum is due to the Razin effect, not self-absorption. |
| 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] | CORONAL LOOP OSCILLATIONS ; SOLAR RADIO-BURSTS ; GYROSYNCHROTRON EMISSION ; PLASMA ; ELECTRONS ; SUMER |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000248325400008 |
| 公开日期 | 2012-02-04 |
| 源URL | [http://159.226.72.40/handle/332002/2338]  |
| 专题 | 紫金山天文台_分子云与恒星形成研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China 2.Radiophys Res Inst, NIRFI, Nizhnii Novgorod, Russia |
| 推荐引用方式 GB/T 7714 | Reznikova, V. E.,Melnikov, V. F.,Su, Y.,et al. Pulsations of microwave flaring emission at low and high frequencies[J]. ASTRONOMY REPORTS,2007,51(7):588-596. |
| APA | Reznikova, V. E.,Melnikov, V. F.,Su, Y.,&Huang, G..(2007).Pulsations of microwave flaring emission at low and high frequencies.ASTRONOMY REPORTS,51(7),588-596. |
| MLA | Reznikova, V. E.,et al."Pulsations of microwave flaring emission at low and high frequencies".ASTRONOMY REPORTS 51.7(2007):588-596. |
入库方式： OAI收割
来源：紫金山天文台
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