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Baryonic acoustic oscillations from 21 cm intensity mapping: the Square Kilometre Array case

Abstract:

We quantitatively investigate the possibility of detecting baryonic acoustic oscillations (BAO) using single-dish 21 cm intensity mapping observations in the post-reionization era. We show that the telescope beam smears out the isotropic BAO signature and, in the case of the Square Kilometre Array (SKA) instrument, makes it undetectable at redshifts z ≳ 1. We however demonstrate that the BAO peak can still be detected in the radial 21 cm power spectrum and describe a method to make this type ...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1093/mnras/stw3224

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Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
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Funding agency for:
Villaescusa-Navarro, F
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Funding agency for:
Villaescusa-Navarro, F
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Funding agency for:
Alonso, D
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Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
466
Issue:
3
Pages:
2736-2751
Publication date:
2016-12-11
Acceptance date:
2016-12-08
DOI:
ISSN:
0035-8711 and 1365-2966
Pubs id:
pubs:695539
URN:
uri:19ecf0e9-4436-4629-89dc-4336b6fcde02
UUID:
uuid:19ecf0e9-4436-4629-89dc-4336b6fcde02
Local pid:
pubs:695539

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