Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Carbon monoxide line emission as a CMB foreground: tomography of the
  star-forming universe with different spectral resolutions   The rotational lines of carbon monoxide and the fine structure lines of CII
and of the most abundant metals, emitted during the epoch of enhanced star
formation in the universe, are redshifted in the frequency channels where the
present-day and future CMB experiments are sensitive. We estimate the
contribution to the CMB angular power spectrum by the emission in such lines in
merging star-forming galaxies. We used the Lacey-Cole approach to characterize
the distribution of the merging halos, together with a parametrization for the
star formation rate in each of them. Using observational data from a sample of
local, low-redshift, and high-redshift objects, we calibrated the luminosity in
each line as a function of the star formation rate. We show that the
correlation term arising from CO line emission is a significant source of
foreground for CMB in a broad range of frequencies (in particular in the 20-60
GHz band) and for 1000<l<8000, corresponding to angular scales smaller than 10
arcminutes. Moreover, we demonstrate that observing with different spectral
resolutions will give the possibility of increasing the amplitude of the signal
up to two orders of magnitude in C_l and will help separate the line
contribution from practically all other foreground sources and from the primary
fluctuations themselves, since these show no significant dependence on the
spectral resolution. We propose to perform observations with varying spectral
bandwidths as a new tool to construct a tomography of the universe, by probing
different redshift slices with varying thickness. (abridged)

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The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math