Alfvén waves in the context of solar-like star formation: accretion columns and disks |
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Authors: | Vasconcelos Maria Jaqueline Jatenco-Pereira Vera Opher Reuven |
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Institution: | 1.Universidade Estadual de Santa Cruz, Ilhéus, BRASIL ;2.IAG Universidade de S?o Paulo, S?o Paulo, Brasil ; |
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Abstract: | In this work we examine the damping of Alfvén waves as a source of plasma heating in disks and magnetic funnels of young solar
like stars, the T Tauri stars. We apply four different damping mechanisms in this study: viscous-resistive, collisional, nonlinear
and turbulent, exploring a wide range of wave frequencies, from 10−5Ωi to 10−1Ωi (where Ωi is the ion-cyclotron frequency). The results show that Alfvénic heating can increase the ionization rate of accretion disks
and elevate the temperature of magnetic funnels of T Tauri stars opening possibilities to explain some observational features
of these objects.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | accretion disks stars: pre-main-sequence turbulence waves |
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