Stability of radiation-pressure-dominated magnetized discs under a delayed viscosity prescription

Abstract In this paper, the stability of radiation–pressure-dominated accretion discs in the presence of magnetic field and the time delay between the stress and the pressure were investigated. The response of magnetic field to perturbation of height was considered as Bφ1/Bφ = −mH1/H. According to C...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2017-12, Vol.472 (4), p.4251-4258
Main Authors: Khosravi, A., Khesali, A. R.
Format: Article
Language:English
Subjects:
Accretion disks
Delay
Deposition
Magnetic fields
Magnetism
Perturbation
Radiation
Simulation
Stability
Time lag
Viscosity
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Summary:Abstract In this paper, the stability of radiation–pressure-dominated accretion discs in the presence of magnetic field and the time delay between the stress and the pressure were investigated. The response of magnetic field to perturbation of height was considered as Bφ1/Bφ = −mH1/H. According to Ciesielski et al. (2012), for the delay larger than a critical value (e.g. if Ωτ 
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stx1842