Numerical simulations of coronal magnetic field loop evolution

Details Numerical simulations of coronal magnetic field loop evolution Numerical simulations of coronal magnetic field loop evolution

2006-03-31

arxiv.org/abs/astro-ph/0603857v1

Astronomy and Astrophysics

Astrophysics

9 pages, 7 figures, submitted to A&A

Scientific paper

We present the results of the numerical simulations of the interaction between a magnetized star and an imperfectly conducting accretion disk. To analyze the ''star-disk'' interaction we numerically investigate the MHD equations used Godunov-type high resolution numerical method. It was found that the ''star-disk'' interaction occurs with quasi-periodic reconnection of the magnetic field coronal loops and plasmoid ejections. In the case of the perfect disk conductivity the evolution of the coronal magnetic field leads to the periodic outflow of angular momentum from the disk. In the case of an imperfectly conducting disk the configuration of the magnetic field is formed such that the disk angular momentum carried by magnetic field gets balanced by angular momentum carried by matter.

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