Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparing cosmic shear measures - Optimizing the Information content of
  cosmic shear data vectors   We introduce an optimized data vector of cosmic shear measures (N). This data
vector has high information content, is not sensitive against B-mode
contamination and only shows small correlation between data points of different
angular scales. We show that a data vector of the two-point correlation
function (2PCF) in general contains more information on cosmological parameters
compared to a data vector of the aperture mass dispersion. Reason for this is
the fact that <M_ap^2> lacks the information of the convergence power spectrum
(P_\kappa) on large angular scales, which is contained in the 2PCF data vector.
Therefore we create a combined data vector N, which retains the advantages of
<M_ap^2> and in addition is also sensitive to the large-scale information of
P_\kappa. We compare the information content of the three data vectors by
performing a detailed likelihood analysis and use ray-tracing simulations to
derive the covariance matrices. In the last part of the paper we contaminate
all data vectors with B-modes on small angular scales and examine their
robustness against this contamination.The combined data vector strongly
improves constraints on cosmological parameters compared to <M_ap^2>. Although,
in case of a pure E-mode signal the information content of the 2PCF is higher,
in the more realistic case where B-modes are present the 2PCF data vector is
strongly contaminated and yields biased cosmological parameter estimates. N
shows to be robust against this contamination. Furthermore the individual data
points of N show a much smaller correlation compared to the 2PCF leading to an
almost diagonal covariance matrix.

1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th