Dynamo in Protostar

Abstract

In this paper, we estimate the magnetic Reynolds number of a typical protostar before and after deuterium burning, and claim for the existence of dynamo process in both the phases, because the magnetic Reynolds number of the protostar far exceeds the critical magnetic Reynolds number for dynamo action. Using the equipartition of kinetic and magnetic energies, we estimate the steady-state magnetic field of the protostar to be of the order of kilo-gauss, which is in good agreement with observations.

5 pages

References in corpus (6)

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• A Magnetized Jet from a Massive Protostar
• Magnetic Fields and Rotations of Protostars
• Numerical demonstration of fluctuation dynamo at low magnetic Prandtl numbers
• Magnetic field amplification during gravitational collapse - Influence of initial conditions on dynamo evolution and saturation
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