Effects of Large-Scale Simple Velocity Shear on a Fluctuating Interplanetary Magnetic Field

13th Annual International Astrophysics Conference: Voyager, IBEX, and the Interstellar Medium

物理学;天文学

Jokipii, J.R.^1 ; Kóta, Jozsef^1 ; Giacalone, Joe^1

Departments of Planetary Sciences and Astronomy, University of Arizona, Tucson

AZ, United States^1

关键词: Fluid shear;    Interplanetary magnetic fields;    Mhd fluids;    Radial magnetic field;    Velocity shear;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/577/1/012015/pdf
DOI  :  10.1088/1742-6596/577/1/012015

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The effects of large-scale simple velocity shear on a magnetic field in a low-β MHD fluid are examined in the limit that the magnetic field does not significantly affect the fluid flow. The large-scale fluid shear stretches the magnetic field and can cause significant field amplification. Application to the solar wind suggests that the latitudinal shear observed may contribute significantly to the observed periods of underwound or radial magnetic field.