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MHD turbulence-Star Formation Connection: from pc to kpc scales

Published online by Cambridge University Press:  08 June 2011

E. M. de Gouveia Dal Pino ,
R. Santos-Lima ,
A. Lazarian ,
M. R. M. Leão ,
D. Falceta-Gonçalves  and
G. Kowal
E. M. de Gouveia Dal Pino
Affiliation:
IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-090, Brazil email: [email protected]
R. Santos-Lima
Affiliation:
IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-090, Brazil email: [email protected]
A. Lazarian
Affiliation:
Astronomy Department, University of Wisconsin, Madison, WI, USA
M. R. M. Leão
Affiliation:
IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-090, Brazil email: [email protected]
D. Falceta-Gonçalves
Affiliation:
NAC, Universidade Cruzeiro do Sul, Rua Galvão Bueno 868, São Paulo 01506-000, Brazil
G. Kowal
Affiliation:
IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-090, Brazil email: [email protected]
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Abstract

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The transport of magnetic flux to outside of collapsing molecular clouds is a required step to allow the formation of stars. Although ambipolar diffusion is often regarded as a key mechanism for that, it has been recently argued that it may not be efficient enough. In this review, we discuss the role that MHD turbulence plays in the transport of magnetic flux in star forming flows. In particular, based on recent advances in the theory of fast magnetic reconnection in turbulent flows, we will show results of three-dimensional numerical simulations that indicate that the diffusion of magnetic field induced by turbulent reconnection can be a very efficient mechanism, especially in the early stages of cloud collapse and star formation. To conclude, we will also briefly discuss the turbulence-star formation connection and feedback in different astrophysical environments: from galactic to cluster of galaxy scales.

Keywords

MHDturbulenceplasmasstars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S274: Advances in Plasma Astrophysics , September 2010 , pp. 333 - 339
Copyright
Copyright © International Astronomical Union 2011

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