Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An MHD Gadget for cosmological simulations   Various radio observations have showed that the hot atmospheres of galaxy
clusters are magnetized. However, our understanding of the origin of these
magnetic fields, their implications on structure formation and their interplay
with the dynamics of the cluster atmosphere, especially in the centers of
galaxy clusters is still very limited. In preparation to the upcoming new
generation of radio telescopes (like EVLA, LWA, LOFAR and SKA), a huge effort
is being made to learn more about cosmological magnetic fields from the
observational perspective. Here we present the implementation of magneto
hydrodynamics in the cosmological SPH code GADGET. We discuss the details of
the implementation and various schemes to suppress numerical instabilities as
well as regularization schemes, in the context of cosmological simulations. The
performance of the SPH MHD code is demonstrated in various one and two
dimensional test problems, which we performed if a fully, three dimensional
setup to test the code under realistic circumstances. Comparing with solutions
obtained with ATHENA, we find excellent agreement with our SPH MHD
implementation. Finally we apply our SPH MHD implementation to forming galaxy
clusters within a large, cosmological box. Performing a resolution study we
demonstrate the robustness of the predicted shape of the magnetic field
profiles in galaxy clusters, which is in good agreement with previous studies.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn