Chemical In Homogeneities, Electric Currents, and Diffusion Waves in Stars

Vadim Urpin

Chemical In Homogeneities, Electric Currents, and Diffusion Waves in Stars

Vadim Urpin * §

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§ A.F.Ioffe Institute of Physics and Technology,

Chemical In Homogeneities, Electric Currents, and Diffusion Waves in Stars

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Abstract

The stars of the middle main sequence often have spot-like chemical structures at their surfaces. We consider diffusion caused by electric currents and argue that such current-driven diffusion can form chemical in homogeneities in plasma. Diffusion was considered using partial momentum equations derived by the Chapman-Enskog method. We argue that diffusion caused by electric currents can substantially change the surface chemistry of stars and form spotted chemical structures even in a relatively weak magnetic field. The considered mechanism can be responsible for a formation of element spots in Hg-Mn and Ap-stars. Diffusion in the presence of electric currents can be accompanied by propagation of a particular type of magneto hydrodynamic modes in which only the impurity number density oscillate. Such modes exist if the magnetic pressure is much greater than the gas pressure and can be the reason of variations of the abundance peculiarities in stars.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Vadim Urpin. 2018. "Chemical In Homogeneities, Electric Currents, and Diffusion Waves in Stars". Global Journal of Science Frontier Research, Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 18 (GJSFR Volume 18 Issue A1).

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GJSFR Volume 18 Issue A1

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

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Classification

GJSFR-A Classification FOR Code: 020105

Submission ReceivedNovember 27, 2017
Peer Review Double Blind
Handling Editor
Accepted December 27, 2017
Published January 6, 2018

Version of record

v1.2

Issue date

February 7, 2018

Language

English

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Total Score: 145

Country: Unknown

Subject: Global Journal of Science Frontier Research

Authors: Vadim Urpin (PhD/Dr. count: 0)

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