Topic
Dipole model of the Earth's magnetic field
About: Dipole model of the Earth's magnetic field is a research topic. Over the lifetime, 2756 publications have been published within this topic receiving 83021 citations.
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TL;DR: In this paper, the main shower characteristics in a strong magnetic field obtained through shower simulation were analyzed and the processes of magnetic bremsstrahlung and pair production were taken into account for values of the parameter >>1.
Abstract: We present the results concerning the main shower characteristics in a strong magnetic field obtained through shower simulation. The processes of magnetic bremsstrahlung and pair production were taken into account for values of the parameter >>1. We compare our simulation results with a recently developed cascade theory in a strong magnetic field.
33 citations
TL;DR: In this article, the evolution of a magnetic field in a prescribed velocity field is calculated for the idealized case of hexagonal cells, and the results demonstrate the tendency of the field to accumulate at those boundary points where the flow is most strongly converging.
Abstract: Some theoretical models illustrating the growth of magnetic fields around the boundaries of supergranulation cells are given. The evolution of a magnetic field in a prescribed velocity field is calculated for the idealized case of hexagonal cells. The calculations are carried out both for a perfect conductor and a fluid of finite conductivity. The theory is developed in such a way as to be virtually free of specific assumptions about the depth dependence of the supergranulation flow. The results demonstrate the tendency of the field to accumulate at those boundary points where the flow is most strongly converging.
33 citations
TL;DR: In this paper, a new scaling law for the planetary magnetic field strengths is obtained assuming the magnetostrophic balance. But the scaling law is not applicable to the magnetic field strength of the Earth.
33 citations
TL;DR: In this article, a model of a self-consistent MHD dynamo in a rotating spherical shell is investigated through numerical simulations, in which a fully spectral scheme is used to guarantee precise computation in space.
33 citations
TL;DR: In this article, two mechanisms by which the earth's magnetic field affects the electromagnetic signal from a nuclear explosion in the atmosphere are discussed. But neither of these mechanisms is considered in this paper.
Abstract: There are two mechanisms by which the earth's magnetic field affects the electromagnetic signal from a nuclear explosion in the atmosphere. First, the Compton recoil electrons generated in the air by explosion gamma rays interact with the earth's magnetic field producing a back' field that tends to cancel the earth's field in the region near the explosion. Such a cancellation is equivalent to radiation from a magnetic dipole. Approximate calculations described indicate that this back' field is small at sea level, but increases with altitude. The other mechanism is that the earth's field is peturbed by the blast wave motion of heated (conducting) air. Calculations indicate that this mechanism produces a substantial effect, and its magnitude is crudely estimated. (auth)
33 citations