Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing the origin of diffuse radio emission in the cool-core of the
  Phoenix galaxy cluster   Cool core galaxy clusters are considered to be dynamically relaxed clusters
with regular morphology and highly X-ray luminous central region. However, cool
core clusters can also be sites for merging events that exhibit cold fronts in
X-ray and mini-halos in radio. We present recent radio/X-ray observations of
the Phoenix Cluster or SPT-CL J2344-4243 at the redshift of $z=0.596$. Using
archival {\it Chandra} X-ray observations, we detect spiraling cool gas around
the cluster core as well as discover two cold fronts near the core. It is
perhaps the most distant galaxy cluster to date known to host cold fronts.
Also, we present JVLA\footnote{Jansky Very Large Array\\
\url{https://science.nrao.edu/facilities/vla}} 1.52 GHz observations of the
minihalo, previously discovered at 610 MHz with GMRT\footnote{Giant Metrewave
Radio Telescope\\ \url{http://www.gmrt.ncra.tifr.res.in}} observations in the
center of the Phoenix galaxy cluster. The minihalo flux density at 1.52 GHz is
$9.65 \pm 0.97$ mJy with the spectral index between 610 MHz and 1.52 GHz being
$-0.98 \pm 0.16$\footnote{$S_{\nu} = \nu^{\alpha}$ where $S_{\nu}$}. A possible
origin of these radio sources is turbulence induced by sloshing of the gas in
the cluster core.

11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat