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Published online by Cambridge University Press: 03 August 2017
Duvall, Harvey and Pomerantz (1986) reported the existence of a ‘structural asymmetry’ inside the Sun. We show that this asymmetry is not a consequence of the Sun's rotation. We attribute the asymmetry, rather, to a toroidal magnetic field inside the Sun. Consistency requires a field of about one megagauss located in the lower part of the convection zone. Accounting for such a field would wreak havoc on our understanding of the solar dynamo and convection.