Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Searches for high redshift galaxies using gravitational lensing   We present different methods used to identify high redshift (z>5) objects in
the high-magnification regions of lensing galaxy clusters, taking advantage of
very well constrained lensing models. The research procedures are explained and
discussed. The detection of emission lines in the optical/NIR spectra, such as
Lyman-alpha, allows us to determine the redshift of these sources. Thanks to
the lensing magnification, it is possible to identify and to study more distant
or intrinsically fainter objects with respect to standard field surveys.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom