Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytical estimation of the Earth's magnetic field scale   In this paper we analytically estimate the magnetic field scale of planets
with physical core conditions similar to that of Earth from a statistical point
of view. We evaluate the magnetic field on the basis of the physical parameters
of the center of the planet, such as density, temperature, and core size. We
look at the contribution of the Peltier-Seebeck effect on the magnetic field,
showing that an electrical thermal current can exist in a rotating fluid
sphere. Finally, we apply our calculations to Earth and Jupiter. In each case
we show that the thermal generation of currents leads to a magnetic field scale
comparable to the observed fields of the two planets.

32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph