Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-wavelength data handling in current and future surveys: the
  possible role of Virtual Observatory   Here we review some of the main issues related to multi-wavelength source
identification and characterization, with particular emphasis on the field of
X-ray surveys carried out over the last years. This complex and time-consuming
process is going to represent one of the main difficulties over the coming
years, when significantly larger surveys, both in area and depth, will be
carried out with the new generations of space- and ground-based facilities like
e.g. eROSITA, WISE, VISTA, Pan-STARRS, and LSST. The Virtual Observatory can
offer a reliable way to approach to a new concept of data handling and
multi-wavelength source characterization, provided that uniform and rigorous
data analyses and extensive quality checks are performed.

2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol