Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Simulation of Star Formation by the Bow Shock of the Centaurus
  A Jet   Recent Hubble Space Telescope (HST) observations of the extragalactic radio
source Centaurus A (Cen A) display a young stellar population around the
southwest tip of the inner filament 8.5 kpc from the Cen A galactic center,
with ages in the range of 1-3 Myr. Crockett et al. (2012) argue that the
transverse bow shock of the Cen A jet triggered this star formation as it
impacted dense molecular cores of clouds in the filament. To test this
hypothesis, we perform three-dimensional numerical simulations of induced star
formation by the jet bow shock in the inner filament of Cen A, using a
positivity preserving WENO method to solve the equations of gas dynamics with
radiative cooling. We find that star clusters form inside a bow-shocked
molecular cloud when the maximum initial density of the cloud is > 40 H2
molecules/cm^3. In a typical molecular cloud of mass 10^6 M_sun and diameter
200 pc, approximately 20 star clusters of mass 10^4 M_sun are formed, matching
the HST images.

33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn