Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The ASCA Hard Serendipitous Survey (HSS): a Progress Update   We present here a status update on the ASCA Hard Serendipitous Survey (HSS),
a survey program conducted in the 2-10 keV energy band. In particular we
discuss the number-flux relationship, the 2-10 keV spectral properties of the
sources and of the spectroscopically identified objects.

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The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
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The categories of this paper are: cs
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: stat
10
The categories of this paper are: q-bio