Two Populations of Sunspot Groups and Their Meridional Motions

被引：3

作者：

Nagovitsyn, Yury ^{[1
,2
]}

Pevtsov, Alexei ^{[3
]}

Osipova, Aleksandra ^{[1
]}

机构：

[1] Cent Astron Observ Pulkovo, St Petersburg, Russia

[2] State Univ Aerosp Instrumentat, St Petersburg, Russia

[3] Natl Solar Observ, 3665 Discovery Dr, Boulder, CO 80303 USA

来源：

SOLAR PHYSICS | 2023年 / 298卷 / 09期

关键词：

Solar activity; Sunspots; Sunspot group populations; Velocity fields; SOLAR DIFFERENTIAL ROTATION; GENERAL-CIRCULATION; MAGNETIC-FIELDS; MOUNT WILSON; CYCLES; 10; VELOCITY; FLOW; STATISTICS; SUN; MAINTENANCE;

D O I：

10.1007/s11207-023-02204-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is shown that the average meridional velocities of sunspot groups linearly depend on their average longitudinal velocities (solar rotation) with a high correlation coefficient of -0.95. The relationship differs for small, short-lived and large, long-lived groups. The meridional motions of sunspots do not have any pronounced global distribution law with latitude, but depend on their individual longitudinal velocities in a rotating coordinate system close to the Carrington one. The found relations indicate that the Coriolis force may play a role in driving the meridional motions of sunspot groups.

引用

页数：15

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