4 papers
Geophysical intensity problems: the axisymmetric case
Ralf Kaiser
Considering the earth or any other celestial body the main sources of the gravitational as well as of the magnetic field lie inside the body. Above the surface both fields are in g…
Axisymmetric solutions in the geomagnetic direction problem
Ralf Kaiser, Tobias Ramming
The magnetic field outside the earth is in good approximation a harmonic vector field determined by its values at the earth's surface. The direction problem seeks to determine harm…
Well-posedness of some initial-boundary-value problems for dynamo-generated poloidal magnetic fields
Ralf Kaiser, Hannes Uecker
Given a bounded domain , , we study smooth solutions of a linear parabolic equation with non-constant coefficients in , which at the boundary have to $C…
The axisymmetric antidynamo theorem revisited
Ralf Kaiser, Andreas Tilgner
The axisymmetric kinematic dynamo problem is reconsidered and a number of open questions are answered. Apart from axisymmetry and smoothness of data and solution we deal with this…