The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source
文献类型：期刊论文
| 作者 | Altyntsev, AT; Lesovoi, SV; Meshalkina, NS; Sych, RA; Yan, YH
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2003-03-01 |
| 卷号 | 400期号:1页码:337-346 |
| 关键词 | Sun : flares Sun : radio radiation |
| 英文摘要 | We examine simultaneous observations of microwave, subsecond pulses with high temporal, spatial and spectral resolution from the Siberian Solar Radio Telescope (5.7 GHz, 14 ms resolution) and from the spectropolarimeters (5.2-7.6 GHz, 6 ms) of the National Astronomical Observatories. The September 17, 2001 flare is discussed in detail. The subsecond pulse (SSP) was observed in the initial phase of the flare, and its HWFH duration was 40 ms. The pulse was accompanied by a rapid change of the dynamic spectrum whose width was about 1%, and the degree of polarization made up 35%. The time profile at the SSRT frequency depends substantially on the SSP's spectral features. The SSP was observed by both the NS (North-South) and EW (East-West) arms (in two interference orders in the latter case). SSP sources locations in burst structures were determined. We also find that the source was not a point-like one, but its apparent size was about the beam width (15 arcsec) for the NS scanning direction. In the EW direction the SSP was less than 10 arcsec in size. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000181177300035 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8450]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Russian Acad Sci, ISTP, Siberian Branch, 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, AT,Lesovoi, SV,Meshalkina, NS,et al. The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source[J]. ASTRONOMY & ASTROPHYSICS,2003,400(1):337-346. |
| APA | Altyntsev, AT,Lesovoi, SV,Meshalkina, NS,Sych, RA,&Yan, YH.(2003).The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source.ASTRONOMY & ASTROPHYSICS,400(1),337-346. |
| MLA | Altyntsev, AT,et al."The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source".ASTRONOMY & ASTROPHYSICS 400.1(2003):337-346. |
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来源：国家天文台
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