Prolate stars due to meridional flows

Kotaro Fujisawa; Yoshiharu Eriguchi

doi:10.1093/mnrasl/slt159

Prolate stars due to meridional flows

Kotaro Fujisawa^*, Yoshiharu Eriguchi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We have shown analytically that shapes of incompressible stars could be prolate if appropriate meridional flows exist. Although this result is strictly valid only if either the meridional flow or the rotation is absent and the vorticity is associated uniformly with meridional flow, this implies that perpendicular forces against centrifugal and/or magnetic forces might play important roles within stars. A consequence of the presence of meridional flows might be to decrease stellar oblateness due to centrifugal and/or magnetic fields.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	438
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slt159
Publication status	Published - 2014 Feb
Externally published	Yes

Keywords

Rotation
Stars

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnrasl/slt159

Cite this

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abstract = "We have shown analytically that shapes of incompressible stars could be prolate if appropriate meridional flows exist. Although this result is strictly valid only if either the meridional flow or the rotation is absent and the vorticity is associated uniformly with meridional flow, this implies that perpendicular forces against centrifugal and/or magnetic forces might play important roles within stars. A consequence of the presence of meridional flows might be to decrease stellar oblateness due to centrifugal and/or magnetic fields.",

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AU - Fujisawa, Kotaro

AU - Eriguchi, Yoshiharu

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N2 - We have shown analytically that shapes of incompressible stars could be prolate if appropriate meridional flows exist. Although this result is strictly valid only if either the meridional flow or the rotation is absent and the vorticity is associated uniformly with meridional flow, this implies that perpendicular forces against centrifugal and/or magnetic forces might play important roles within stars. A consequence of the presence of meridional flows might be to decrease stellar oblateness due to centrifugal and/or magnetic fields.

AB - We have shown analytically that shapes of incompressible stars could be prolate if appropriate meridional flows exist. Although this result is strictly valid only if either the meridional flow or the rotation is absent and the vorticity is associated uniformly with meridional flow, this implies that perpendicular forces against centrifugal and/or magnetic forces might play important roles within stars. A consequence of the presence of meridional flows might be to decrease stellar oblateness due to centrifugal and/or magnetic fields.

KW - Rotation

KW - Stars

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JO - Monthly Notices of the Royal Astronomical Society: Letters

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ER -

Prolate stars due to meridional flows

Abstract

Keywords

ASJC Scopus subject areas

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