Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signal of Cosmic Strings in Cross-Correlation of 21-cm Redshift and CMB
  Polarization Maps   We study the signal of cosmic string wakes present before the time of
reionization in the cross-correlation signal of 21-cm redshift and B-mode CMB
polarization maps. The specific non-Gaussian signal of strings in the position
space cross-correlation maps can be extracted by means of a matched filtering
analysis. Signals of strings with tension somewhat lower than those
corresponding to the current upper bound can be identified when embedded in a
background of Gaussian fluctuations from a Planck best-fit LCDM model.

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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
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The categories of this paper are: cs
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci