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Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 cm Emission: Limits on Primordial Non-Gaussianity

Abstract:

The large-scale structure of the Universe supplies crucial information about the physical processes at play at early times. Unresolved maps of the intensity of 21 cm emission from neutral hydrogen HI at redshifts z~1-5 are the best hope of accessing the ultralarge-scale information, directly related to the early Universe. A purpose-built HI intensity experiment may be used to detect the large scale effects of primordial non-Gaussianity, placing stringent bounds on different models of inflatio...

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Authors


Santos, MG More by this author
Ferreira, PG More by this author
Ferramacho, L More by this author
Journal:
PRL
Volume:
111
Pages:
171302
Publication date:
2013-05-29
DOI:
URN:
uuid:d4eee5ea-6dc3-4c51-b9e4-22f103b55bfc
Source identifiers:
414345
Local pid:
pubs:414345

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