Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Contribution to the Diffuse Radio Background from Extragalactic Radio
  Sources   We examine the brightness of the Cosmic Radio Background (CRB) by comparing
the contribution from individual source counts to absolute measurements. We use
a compilation of radio counts to estimate the contribution of detected sources
to the CRB in several different frequency bands.We apply a Monte Carlo Markov
Chain technique to estimate the brightness values and uncertainties, paying
attention to various sources of systematic error. We compare our results to
absolute measurements from the ARCADE 2 experiment. At v = 150 MHz, 325 MHz,
408 MHz, 610 MHz, 1.4 GHz, 4.8 GHz, and 8.4 GHz our calculated contributions to
the background sky temperature are 18, 2.8, 1.6, 0.71, 0.11, 0.0032, 0.0059 K,
respectively. If the ARCADE 2 measurements are correct and come from sources,
then there must be an additional population of radio galaxies, fainter than
where current data are probing. More specifically, the Euclidean-normalized
counts at 1.4 GHz have to have an additional bump below about 10 {\mu}Jy.

27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an