Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Masses of galaxy clusters from gravitational lensing   Despite consistent progress in numerical simulations, the observable
properties of galaxy clusters are difficult to predict ab initio. It is
therefore important to compare both theoretical and observational results to a
direct measure of the cluster mass. This can be done by measuring the
gravitational lensing effects caused by the bending of light by the cluster
mass distribution. In this review we discuss how this phenomenon can be used to
determine cluster masses and study the mass distribution itself. As sample
sizes increase, the accuracy of the weak lensing mass estimates needs to
improve accordingly. We discuss the main practical aspects of these
measurements. We review a number of applications and highlight some recent
results.

29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph