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Evolution of several space weather events connected with Forbush decreases

Published online by Cambridge University Press:  01 September 2008

I. Dorotovič ,
K. Kudela ,
M. Lorenc ,
T. Pintér  and
M. Rybanský
I. Dorotovič
Affiliation:
Slovak Central Observatory, P.O. Box 42, SK-94701 Hurbanovo, Slovak Republic email: ivan.dorotovic@suh.sk
K. Kudela
Affiliation:
Institute of Experimental Physics SAS, Watsonova 47, SK-04353 Košice, Slovak Republic email: kkudela@upjs.sk
M. Lorenc
Affiliation:
Slovak Central Observatory, P.O. Box 42, SK-94701 Hurbanovo, Slovak Republic email: ivan.dorotovic@suh.sk
T. Pintér
Affiliation:
Slovak Central Observatory, P.O. Box 42, SK-94701 Hurbanovo, Slovak Republic email: ivan.dorotovic@suh.sk
M. Rybanský
Affiliation:
Institute of Experimental Physics SAS, Watsonova 47, SK-04353 Košice, Slovak Republic email: kkudela@upjs.sk
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Abstract

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In our recent paper (Dorotovič et al. 2008a) we focused on a study of the Forbush decrease (FD) of January 17–18 and 21–22, 2005. It was shown that the corresponding recovery time can depend on the density of high-energy protons in the CME matter. In this paper we identified several additional events in the period between 1995 and 2007. We found that the majority of FDs studied is accompanied by an abrupt count increase in the proton channel P1 and by a simultaneous decrease in the channel P7 (GOES). However, the analysis of temporal evolution of all FDs did not confirm the hypothesis on different recovery time after FD as a function of the energy distribution of the particles penetrating into radiation belts of the Earth.

Keywords

ISM: cosmic raysSun: flaressolar-terrestrial relationsEarth
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S257: Universal Heliophysical Processes , September 2008 , pp. 57 - 59
Copyright
Copyright © International Astronomical Union 2009

References

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