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Anomalous Forbush effects from sources far from Sun center

Published online by Cambridge University Press:  01 September 2008

E. Eroshenko ,
A. Belov ,
H. Mavromichalaki ,
V. Oleneva ,
A. Papaioannou  and
V. Yanke
E. Eroshenko
Affiliation:
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation Russian Academy of Sciences (IZMIRAN), 142190 Troitsk, Moscow region, Russia email: [email protected]
A. Belov
Affiliation:
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation Russian Academy of Sciences (IZMIRAN), 142190 Troitsk, Moscow region, Russia email: [email protected]
H. Mavromichalaki
Affiliation:
Nuclear and Particle Physics Section, Physics Department, University of Athens, Panepistimiopolis, Zografos GR-15783, Athens, Greece
V. Oleneva
Affiliation:
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation Russian Academy of Sciences (IZMIRAN), 142190 Troitsk, Moscow region, Russia email: [email protected]
A. Papaioannou
Affiliation:
Nuclear and Particle Physics Section, Physics Department, University of Athens, Panepistimiopolis, Zografos GR-15783, Athens, Greece
V. Yanke
Affiliation:
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation Russian Academy of Sciences (IZMIRAN), 142190 Troitsk, Moscow region, Russia email: [email protected]
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Abstract

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The Forbush effects associated with far western and eastern powerful sources on the Sun that occurred on the background of unsettled and moderate interplanetary and geomagnetic disturbances have been studied by data from neutron monitor networks and relevant measurements of the solar wind parameters. These Forbush effects may be referred to a special sub-class of events, with the characteristics like the event in July 2005, and incorporated by the common conditions: absence of a significant disturbance in the Earth vicinity; absence of a strong geomagnetic storm; slow decrease of cosmic ray intensity during the main phase of the Forbush effect. General features and separate properties in behavior of density and anisotropy of 10 GV cosmic rays for this subclass are investigated.

Keywords

elementary particlesSun: activityinterplanetary mediumsolar-terrestrial relationscoronal mass ejections (CMEs)shock waves
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S257: Universal Heliophysical Processes , September 2008 , pp. 451 - 456
Copyright
Copyright © International Astronomical Union 2009

References

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