IMAGING AND SPECTRAL OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR FLARE
文献类型：期刊论文
| 作者 | Li, D.1,2; Ning, Z. J.1; Zhang, Q. M.1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 807期号:1页码:72 |
| 关键词 | line: profiles Sun: oscillations Sun: radio radiation Sun: UV radiation Sun: X-rays, gamma-rays techniques: spectroscopic |
| 英文摘要 | We explore the quasi-periodic pulsations (QPPs) in a solar flare observed by Fermi Gamma-ray Burst Monitor, Solar Dynamics Observatory, Solar Terrestrial Relations Observatory, and Interface Region Imaging Spectrograph (IRIS) on 2014 September 10. QPPs are identified as the regular and periodic peaks on the rapidly varying components, which are the light curves after removing the slowly varying components. The QPPs display only three peaks at the beginning on the hard X-ray emissions, but 10 peaks on the chromospheric and coronal line emissions, and more than seven peaks (each peak corresponds. to a type III burst on the dynamic spectra) at the radio emissions. A. uniform quasi-period of about 4 minutes is detected among them. AIA imaging observations exhibit that the 4-minute. QPPs originate from the flare ribbon. and tend to appear on the ribbon front. IRIS spectral observations show that each peak of the QPPs tends to a broad line width and a red Doppler velocity at C I, O IV, Si IV, and Fe XXI lines. Our findings indicate that the QPPs are produced by the non-thermal electrons that are accelerated by the induced quasi-periodic magnetic reconnections in this flare. |
| 学科主题 | 天文和天体物理 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DOPPLER-SHIFT OSCILLATIONS ; CORONAL LOOP OSCILLATIONS ; HARD X-RAYS ; MAGNETIC-FIELD RECONNECTION ; BRAGG CRYSTAL SPECTROMETER ; RADIO-BURSTS ; MAGNETOHYDRODYNAMIC OSCILLATIONS ; ELECTRON-BEAMS ; EMERGING FLUX ; SUPRA-ARCADE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000358945200072 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/14915]  |
| 专题 | 紫金山天文台_太阳活动的多波段观测研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, D.,Ning, Z. J.,Zhang, Q. M.. IMAGING AND SPECTRAL OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR FLARE[J]. ASTROPHYSICAL JOURNAL,2015,807(1):72. |
| APA | Li, D.,Ning, Z. J.,&Zhang, Q. M..(2015).IMAGING AND SPECTRAL OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR FLARE.ASTROPHYSICAL JOURNAL,807(1),72. |
| MLA | Li, D.,et al."IMAGING AND SPECTRAL OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR FLARE".ASTROPHYSICAL JOURNAL 807.1(2015):72. |
入库方式： OAI收割
来源：紫金山天文台
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