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Demonstration of a magnetic Prandtl number disc instability from first principles

Abstract:

Understanding what determines the strength of MHD turbulence in accretion discs is a question of fundamental theoretical and observational importance. In this work we investigate whether the dependence of the turbulent accretion disc stress (α) on the magnetic Prandtl number (Pm) is sufficiently sensitive to induce thermal-viscous instability using 3D MHD simulations. We first investigate whether the α-Pm dependence, found by many previous authors, has a physical or numerical origin by conduc...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1093/mnras/stx2055

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Institution:
University of Oxford
Oxford college:
University College
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
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Funding agency for:
Potter, W
Grant:
Junior Research Fellowship
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Funding agency for:
Balbus, S
Grant:
Wolfson Research Merit Award
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Funding agency for:
Balbus, S
Grant:
Wolfson Research Merit Award
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Grant:
Consolidated Grant to Oxford Astrophysics
Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
472
Issue:
3
Pages:
3021–3028
Publication date:
2017-08-14
Acceptance date:
2017-08-08
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Source identifiers:
729211
Keywords:
Pubs id:
pubs:729211
UUID:
uuid:4a0387d0-58cb-4ecb-b178-cedfe282ead2
Local pid:
pubs:729211
Deposit date:
2017-09-17

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