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On the effects of the stellar magnetic field on the structure of T Tauri accretion discs

Y. Ulchin·O. Regev·G. A. Wynn
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Abstract

The structure of accretion discs around magnetic T Tauri stars is numerically calculated using a particle hydrodynamical code, in which magnetic interaction is included in the framework of King's diamagnetic blob accretion model. Setting up the calculation so as to simulate the density structure of a quasi-steady disc in the equatorial plane of a T Tauri star, we find that the central star's magnetic field typically produces a central hole in the disc and spreads out the surface density distribution. We argue that this result suggests a promising mechanism for explaining the unusual flatness (IR excess) of T Tauri accretion disc spectra.

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Y. Ulchin, O. Regev, G. A. Wynn. 2001-12-04. On the effects of the stellar magnetic field on the structure of T Tauri accretion discs. https://arxiv.org/abs/astro-ph/0112085

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