On the (non) existence of a gravitomagnetic Dynamo

Details On the (non) existence of a gravitomagnetic Dynamo On the (non) existence of a gravitomagnetic Dynamo

1999-05-19

arxiv.org/abs/gr-qc/9905070v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTex, 8 pages, no figs, to appear in the book "The Lense-Thirring effect", ed. World Scientific (1999)

Scientific paper

Due to the resemblance between Maxwell and the gravitomagnetic equations obtained in the weak field and slow motion limit of General Relativity, one can ask if it is possible to amplify a seed intrinsic rotation or spin motion by a gravitomagetic dynamo, in analogy with the well-known dynamo effect. Using the Galilean limits of the gravitomagnetic equations, the answer to this question is negative, due to the fact that a "magnetic" Galilean limit for the gravitomagnetic equations is physically inconsistent.

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