Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytic Approach to the Stability of Standing Accretion Shocks:
  Application to Core-Collapse Supernovae   We explore an analytic model of the accretion shock in the post bounce phase
of a core-collapse supernova explosion. We find growing oscillations of the
shock in the l=1 and l=2 modes, in agreement with a variety of existing
numerical simulations. For modest values of the ratio of the outer accretion
shock to that of the inner boundary to the shocked flow, the instability
appears to derive from the growth of trapped sound waves, whereas at higher
values, postshock advection clearly plays a role. Thus the model described here
may relate to the different mechanisms of instability recently advocated by
Blondin & Mezzacappa, and by Foglizzo and collaborators.

35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin