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29 July 2015 to 6 August 2015
World Forum
Europe/Amsterdam timezone

Forbush-decrease in a Magnetic Cloud

4 Aug 2015, 16:00
1h
Theater Foyer (World Forum)

Theater Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 7
Poster contribution SH-TH Poster 3 SH

Speaker

Dr Ivan Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)

Description

Calculation of cosmic ray intensity in a magnetic cloud is realized. It is supposed that the magnetic cloud near the Sun has the shape of a torus segment with typical structure of the magnetic field (magnetic field rope). The magnetic cloud is located in the coronal mass ejection having distribution of movement velocity by radius. The subsequent propagation of ejection in interplanetary space is determined on the basis of kinematic model. The magnetic field is determined by the freezing-in condition. It is supposed that the cosmic ray intensity in a magnetic cloud is determined by the large-scale electromagnetic field. The zero, first and second moments of distribution function of cosmic ray with different energies are calculated. It is revealed influence of the regions connecting a magnetic cloud to the Sun on cosmic ray intensity. Comparison of calculation results with measurements is shown.
Registration number following "ICRC2015-I/" 167
Collaboration -- not specified --

Primary author

Dr Ivan Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)

Co-author

Dr Stanislav Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)

Presentation materials

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