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An accretion disc instability induced by a temperature sensitive a parameter

Abstract:

In the standard thin-disc formalism, the dimensionless α parameter is usually assumed to be constant. However, there are good theoretical reasons for believing, as well as evidence from simulations, that α is dependent on intrinsic disc properties. In this paper, we analyse the conditions for the stability of a thin accretion disc in which α is a function of the magnetic Prandtl number, the ratio of collisional viscosity to resistivity. In the inner disc, where the free electron opacity and r...

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Publication status:
Published

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Publisher copy:
10.1093/mnras/stu519

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
Publisher:
Blackwell Publishing Ltd
Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
441
Issue:
1
Pages:
681-689
Publication date:
2014-06-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:5ceab0ce-4164-4bbf-993f-41b15a6ee70d
Source identifiers:
465703
Local pid:
pubs:465703

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