Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Quasar Feedback in Galaxy Groups   We study the effect of quasar feedback on distributions of baryons and
properties of intracluster medium in galaxy groups using high-resolution
numerical simulations. We use the entropy-conserving Gadget code that includes
gas cooling and star formation, modified to include a physically-based model of
quasar feedback. For a sample of ten galaxy group-sized dark matter halos with
masses in the range of 1 to $5\times 10^{13} M_{\odot}/h$, star formation is
suppressed by more than 50% in the inner regions due to the additional pressure
support by quasar feedback, while gas is driven from the inner region towards
the outer region of the halos. As a result, the average gas density is 50%
lower in the inner region and 10% higher in the outer region in the simulation,
compared to a similar simulation with no quasar feedback. Gas pressure is
lowered by about 40% in the inner region and higher in the outer region, while
temperature and entropy are enhanced in the inner region by about 20-40%. The
total group gas fraction in the two simulations generally differs by less than
10%. We also find a small change of the total thermal Sunyaev-Zeldovich
distortion, leading to 10% changes in the microwave angular power spectrum at
angular scales below two arcminutes.

17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom