Models of the infinitely thin global heliospheric current sheet

Abstract

On the models of the global heliospheric current sheet with the finite thickness and all three components of the magnetic field AIP Conf.Abstract. The different models of the infinitely thin global heliospheric current sheet with small (< 5) number of parameters are considered. It is shown that the form of the current sheets calculated using the Wilcox Solar Observatory (WSO) model, the main source of our knowledge of this form, is rather complicated and none of the models considered adequately describe these current sheets. The characteristics of the magnetic drift velocity and the distribution of the galactic cosmic ray intensity are calculated both for the widely used model of the tilted current sheet and for the WSO current sheet. It is demonstrated that the dependence of both drift velocity and intensity distribution on the model used is significant.Keywords: solar magnetic field, heliospheric magnetic field, heliospheric current sheet, models of the heliospheric current sheet, galactic cosmic rays, modeling galactic cosmic ray intensity PACS: 96.60.Hv, 96.50.Bh, 96.50.sh

Manifestations of Two Branches of Solar Activity in the Heliosphere and GCR Intensity

“…First, when discussing the effect of the two branches of solar activity on the heliospheric characteristics important for GCR, the consideration was largely qualitative [Krainev et al, 2013]. Then, using the model of potential magnetic field with source surface (see [Altschuler, Newkirk, 1969;Schatten et al, 1969] and references in [Hoeksema, 1984]), we determined the form of magnetic field neutral lines on the source surface, which after the line is extended by the solar wind in the heliosphere yields an acceptable model of the form of the heliospheric current sheet [Krainev, Kalinin, 2010]. Krainev, Kalinin [2013b] have examined characteristics of these forms, their variation with sunspot cycle phase, proposed their classification and HMF inversion model.…”