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Paper   IPM / Astronomy / 14930
School of Astronomy
  Title:   How does an asymmetric magnetic field change the vertical structure
  Author(s): 
1.  M. Samadi
2.  S. Abbassi
3.  R. V. E. Lovelace
  Status:   Published
  Journal: MNRAS
  Vol.:  470
  Year:  2017
  Pages:   2018�??2033
  Supported by:            ipm IPM
  Abstract:
This paper explores the effects of large-scale magnetic fields in hot accretion flows for asymmetric configurations with respect to the equatorial plane. The solutions that we have found show that the large-scale asymmetric magnetic field can significantly affect the dynamics of the flow and also cause notable outflows in the outer parts. Previously, we treated a viscous resistive accreting disc in the presence of an odd symmetric B-field about the equatorial plane. Now, we extend our earlier work by taking into account another configuration of large-scale magnetic field that is no longer symmetric.We provide asymmetric field structures with small deviations from even and odd symmetric B-field. Our results show that the disc’s dynamics and appearance become different above and below the equatorial plane. The set of solutions also predicts that even a small deviation in a symmetric field causes the disc to compress on one side and expand on the other. In some cases, our solution represents a very strong outflow from just one side of the disc. Therefore, the solution may potentially explain the origin of one-sided jets in radio galaxies.

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