Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MHD of rotating compact stars with spectral methods: description of the
  algorithm and tests   A flexible spectral code for the study of general relativistic
magnetohydrodynamics is presented. Aiming at investigating the physics of
slowly rotating magnetized compact stars, this new code makes use of various
physically motivated approximations. Among them, the relativistic anelastic
approximation is a key ingredient of the current version of the code. In this
article, we mainly outline the method, putting emphasis on algorithmic
techniques that enable to benefit as much as possible of the non-dissipative
character of spectral methods, showing also a potential astrophysical
application and providing a few illustrative tests.

9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex