RELATION BETWEEN THE AREA OF POLAR CORONAL HOLES AND THE SOLAR WIND SPEED AT A MINIMUM BETWEEN SOLAR CYCLES 22 AND 23

被引：1

作者：

Borisenko, A. V. ^{[1
]}

Bogachev, S. A. ^{[2
]}

机构：

[1] RAS, Lebedev Phys Inst, Moscow, Russia

[2] RAS, Space Res Inst, Moscow, Russia

来源：

SOLAR-TERRESTRIAL PHYSICS | 2023年 / 9卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

coronal holes; solar wind; solar cycle; LATITUDE; DISTURBANCES;

D O I：

10.12737/stp-93202313

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We have used data from the space telescope SOHO/EIT and the spectrometer VEIS on the Wind spacecraft to compare the solar wind (SW) speed near Earth's orbit with changes in the area of polar coronal holes (CHs) on the Sun during the 1996 solar activity minimum. We have found that in March 1996 the SW speed correlated with the southern CH area by a factor of 0.64. In September and October 1996, a correlation was revealed between the SW speed and the area of the northern CH (the coefficients are 0.64 and 0.85 respectively). We believe that this confirms the assumption that the solar wind from polar CHs can penetrate into the ecliptic plane at solar minimum. The SW speed was 460-500 km/s, which is lower than that from equatorial CHs (600-700 km/s).

引用

页码：112 / 117

页数：6

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