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Stability of Accretion Discs around Magnetized Stars

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DOI: 10.4236/ijaa.2014.42026    3,641 Downloads   5,374 Views   Citations

ABSTRACT

We study the stability of accretion disc around magnetised stars. Starting from the equations of magnetohydrodynamics we derive equations for linearized perturbation of geometrically thin, optically thick axisymmetric accretion disc with an internal dynamo around magnetized stars. The structure and evolution of such discs are governed by an evolution equation for matter surface density ∑(R,T). Using the time-dependent equations for an accretion disc we do a linear stability analysis of our steady disc solutions in the presence of the magnetic field generated due to an internal dynamo.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Tessema, S. (2014) Stability of Accretion Discs around Magnetized Stars. International Journal of Astronomy and Astrophysics, 4, 319-331. doi: 10.4236/ijaa.2014.42026.

References

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