Global statistics of 0.8-2.0 GHz radio bursts and fine structures observed during 1992-2000 by the Ondrejov radiospectrograph

被引:65
作者
Jiricka, K [1 ]
Karlicky, M [1 ]
Mészárosová, H [1 ]
Snízek, V [1 ]
机构
[1] Acad Sci Czech Republ, Inst Astron, CS-25165 Ondrejov, Czech Republic
来源
ASTRONOMY & ASTROPHYSICS | 2001年 / 375卷 / 01期
关键词
plasmas; Sun : flares; Sun : radio radiation; methods : data analysis; methods : statistical;
D O I
10.1051/0004-6361:20010782
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
681 solar radio events observed by the Ondrejov 0.8-2.0 GHz radiospectrograph during 1992-2000 are analyzed and corresponding bursts and fine structures classified into ten different classes. A new rare type of fine structure with rapid frequency variation we called lace pattern was included. Drifting pulsation structures, observed usually at the beginning of the impulsive are phase, were recognized among pulsations. Furthermore, a new sub-class of zebra patterns with many zebra lines (similar to 30) superimposed on fibers was identified. For all defined types of burst and fine structures basic characteristics of their parameters are presented. Distributions of various types of burst and fine structures in the years 1992-2000 in dependence on the changes of solar activity during the cycles 22 and 23, occurrences of studied types of burst in association with GOES class flares as well as their relationship to GOES are maxima are shown. Finally, the association of the analyzed bursts with the metric type III bursts observed at Potsdam-Tremsdorf Observatory was studied.
引用
收藏
页码:243 / 250
页数:8
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