Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Baryonic feedback measurement from KV450 cosmic shear analysis   While baryonic feedback is one of the most important astrophysical
systematics that we need to address in order to achieve precision cosmology,
few weak lensing studies have directly measured its impact on the matter power
spectrum. We report measurement of the baryonic feedback parameter with the
constraints on its lower and upper limits from cosmic shear. We use the public
data from the Kilo-Degree Survey and the VISTA Kilo-Degree Infrared Galaxy
Survey spanning 450 deg$^2$. Estimating both cosmological and feedback
parameters simultaneously, we obtain $A_{\rm b}=1.01_{-0.85}^{+0.80}$, which
shows a consistency with the dark matter-only (DMO) case at the
$\sim1.2~\sigma$ level and a tendency toward positive feedback; the $A_{\rm
b}=0$ ($0.81$) value corresponds to the DMO (OWLS AGN) case. Despite this full
constraint of the feedback parameter, our $S_8~(\equiv \sigma_8 \sqrt{\Omega_m
/ 0.3})$ measurement ($0.739^{+0.036}_{- 0.035}$) shifts by only $\sim6$% of
the statistical error, compared to the previous measurement. When we assume the
flat $\Lambda$CDM cosmology favored by the Nine-Year Wilkinson Microwave
Anisotropy Probe (Planck) result, the feedback parameter is constrained to be
$A_{\rm b}=1.21_{-0.54}^{+0.61}$ ($1.60_{-0.52}^{+0.53}$), which excludes the
DMO case at the $\sim2.2~\sigma$ ($\sim3.1~\sigma$) level.

11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex