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

Coronal holes in the long-term cosmic rays modulation

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

Theater Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 41
Poster contribution SH-TH Poster 3 SH

Speaker

Prof. Lev Dorman (IZMIRAN (Russia) and Tel Aviv University (Israel))

Description

A.V. Belov1, R.T.Gushchina1, L.I.Dorman1,2, V.G.Yanke1 1. IZMIRAN, Kalushskoe ave., 4, Troitsk, Moscow, 142190, Russia 2. Israel Cosmic Ray and Space Weather Center with Emilio Segre’ Observatory on Mt. Hermon, affiliated to Tel Aviv University, Golan Research Institute, and Israel Space Agency Dorman L. lid010529@gmail.com Gushchina R. rgus@izmiran.ru Belov A. abelov@izmiran.ru Yanke V. yanke@izmiran.ru The present study of galactic CR modulation in the heliosphere through the 21-24 cycles continues the series of works, where long-term CR modulation was described using the multi-parametric model, including the solar activity (SA) characteristics. Initial data for modeling of CR variations are long-term observations of CR intensity, the characteristics of the solar global magnetic field and the short-time characteristic of SA (solar x-rays flares). Data of the CR intensity were obtained from the ground network of NM and stratospheric sounding. In order to improve the simulation of long-term CR variations we introduced into the model the characteristic of the regions with the open magnetic field – the coronal holes (CH). Location (latitude), the area and the magnetic flux of CHs were used. Modeling modulation is carried out for all period and separately for the periods with the same polarity of the global field of the Sun, taking into account the delay CR variations regarding changes of CA characteristics. The quality of the long-term variations description has been improved by including in the model the СH characteristics.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 0754

Primary author

Dr Anatoly Belov (IZMIRAN, Russia)

Co-authors

Prof. Lev Dorman (IZMIRAN (Russia) and Tel Aviv University (Israel)) Raisa Gushchina (IZMIRAN, Russia) Dr Victor Yanke (IZMIRAN (Russia))

Presentation materials

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