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Dynamo in protostars |
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| Authors: | MAHENDRA K VERMA BIDYA BINAY KARAK ROHIT KUMAR |
| Affiliation: | 1. Department of Physics, Indian Institute of Technology, Kanpur, 208 016, India 2. Department of Physics, Indian Institute of Science, Bangalore, 560 012, India 3. Nordita KTH Royal Institute of Technology and Stockholm University, Roslagstullsbacken 23, SE-106 91, Stockholm, Sweden |
| 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 kilogauss, which is in good agreement with observations. |
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