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ID:
709722.0,
MPI für Astronomie / Publikationen_mpia |
Transport and accretion in planet-forming disks |
Authors: | Turner, N. J.; Fromang, S.; Gammie, C.; Klahr, H.; Lesur, G.; Wardle, M.; Bai, X. -. N. | Place of Publication: | Tucson, Ariz. | Publisher: | University of Arizona Press | Date of Publication (YYYY-MM-DD): | 2014 | Title of Book: | Protostars and Planets VI | Start Page: | 411 | End Page: | 432 | Full Name of Book-Editor(s): | Beuther, Henrik; Klessen, Ralf S.; Dullemond, Cornelis P.; Henning, Thomas | Audience: | Not Specified | Abstract / Description: | Planets appear to form in environments shaped by the gas flowing through protostellar disks to the central young stars. The flows in turn are governed by orbital angular momentum transfer. In this chapter we summarize current understanding of the transfer processes best able to account for the flows, including magneto-rotational turbulence, magnetically launched winds, self-gravitational instability, and vortices driven by hydrodynamical instabilities. For each, in turn, we outline the major achievements of the past few years and the outstanding questions. We underscore the requirements for operation, especially ionization for the magnetic processes and heating and cooling for the others. We describe the distribution and strength of the resulting flows and compare them with the long-used phenomenological a-picture, highlighting issues where the fuller physical picture yields substantially different answers. We also discuss the links between magnetized turbulence and magnetically launched outflows, and between magnetized turbulence and hydrodynamical vortices. We end with a summary of the status of efforts to detect specific signatures of the flows. | External Publication Status: | published | Document Type: | InBook |
Communicated by: | N. N. | Affiliations: | MPI für Astronomie | Identifiers: | URL:http://cdsads.u-strasbg.fr/abs/2014prpl.conf..411T
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