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

Citation
K. Jiricka et al., Global statistics of 0.8-2.0 GHz radio bursts and fine structures observedduring 1992-2000 by the Ondrejov radiospectrograph, ASTRON ASTR, 375(1), 2001, pp. 243-250
Citations number
9
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
375
Issue
1
Year of publication
2001
Pages
243 - 250
Database
ISI
SICI code
1432-0746(200108)375:1<243:GSO0GR>2.0.ZU;2-J
Abstract
681 solar radio events observed by the Ondrejov 0.8-2.0 GHz radiospectrogra ph during 1992-2000 are analyzed and corresponding bursts and fine structur es classified into ten different classes. A new rare type of fine structure with rapid frequency variation we called lace pattern was included. Drifti ng 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 fib ers was identified. For all defined types of burst and fine structures basi c characteristics of their parameters are presented. Distributions of vario us 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 o f studied types of burst in association with GOES class flares as well as t heir relationship to GOES are maxima are shown. Finally, the association of the analyzed bursts with the metric type III bursts observed at Potsdam-Tr emsdorf Observatory was studied.