Journal article

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 inflation. We argue that it may be possible to place tight constraints on the non-Gaussianity parameter f_NL, with an error close to ~1.

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APA Style

Camera, S., Santos, M. G., Ferreira, P., & Ferramacho, L. (2013). Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 cm Emission: Limits on Primordial Non-Gaussianity. PRL, 111, 171302.

MLA Style

Camera, S, et al. “Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 Cm Emission: Limits on Primordial Non-Gaussianity.” PRL, vol. 111, 2013, p. 171302.

Chicago Style

Camera, S, MG Santos, P Ferreira, and L Ferramacho. 2013. “Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 Cm Emission: Limits on Primordial Non-Gaussianity.” PRL 111: 171302.
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Publisher copy:: 10.1103/PhysRevLett.111.171302

Authors

+ Camera, S More by this author

Role:: Author

+ Santos, MG More by this author

Role:: Author

+ Ferreira, P More by this author

Role:: Author

+ Ferramacho, L More by this author

Role:: Author

Journal:: PRL More from this journal
Volume:: 111
Pages:: 171302
Publication date:: 2013-05-29
DOI:: 10.1103/PhysRevLett.111.171302

Keywords:: astro-ph.CO

astro-ph.IM
Pubs id:: pubs:414345
UUID:: uuid:d4eee5ea-6dc3-4c51-b9e4-22f103b55bfc
Local pid:: pubs:414345
Source identifiers:: 414345
Deposit date:: 2013-11-17
ARK identifier:: ark:/29072/ora_d4eee5ea6dc34c51b9e422f103b55bfc

Terms of use

Copyright date:: 2013
Notes:: 5 pages, 3 figures; present version matches the published Letter

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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