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The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source
Altyntsev, AT; Lesovoi, SV; Meshalkina, NS; Sych, RA; Yan, YH
2003-03-01
Source PublicationASTRONOMY & ASTROPHYSICS
Volume400Issue:1Pages:337-346
AbstractWe 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.
KeywordSun : Flares Sun : Radio Radiation
DOI10.1051/0004-6361:20021905
Indexed BySCI
Language英语
WOS IDWOS:000181177300035
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8450
Collection太阳物理研究部
Affiliation1.Russian Acad Sci, ISTP, Siberian Branch, Irkutsk 664033, Russia
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
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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