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A Critique of Current Magnetic-Accretion Models for Classical T-Tauri Stars

Pedro N. Safier
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Abstract

Current magnetic-accretion models for classical T-Tauri stars rely on a strong, dipolar magnetic field of stellar origin to funnel the disk material onto the star, and assume a steady-state. In this paper, I critically examine the physical basis of these models in light of the observational evidence and our knowledge of magnetic fields in low-mass stars, and find it lacking. I also argue that magnetic accretion onto these stars is inherently a time-dependent problem, and that a steady-state is not warranted. Finally, directions for future work towards fully-consistent models are pointed out.

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Pedro N. Safier. 1997-09-16. A Critique of Current Magnetic-Accretion Models for Classical T-Tauri Stars. https://doi.org/10.1086/305212

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