Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Small scale magnetosphere: Laboratory experiment, physical model and
  Hall MHD simulation   A problem of magnetosphere formation on ion inertia scale around weakly
magnetized bodies is investigated by means of laboratory experiment, analytical
analysis and 2.5D Hall MHD simulation. Experimental evidence of specific
magnetic field generated by the Hall term is presented. Direct comparison of
regimes with small and large ion inertia length revealed striking differences
in measured magnetopause position and plasma stand off distance. Analytical
model is presented, which explains such basic features of mini-magnetosphere
observed in previous kinetic simulations as disappearance of bow shock and
plasma stopping at Stoermer particle limit instead of pressure balance
distance. Numerical simulation is found to be in a good agreement with
experiments and analytical model. It gives detailed spatial structure of Hall
field and reveals that while ions penetrate deep inside mini-magnetosphere
electrons overflow around it along magnetopause boundary.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex