Cosmology on ultralarge scales with intensity mapping of the neutral hydrogen 21 cm emission: limits on primodial non-gaussianity

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dc.contributor.authorCamera, Stefano
dc.contributor.authorSantos, Mario G.
dc.contributor.authorFerreira, Pedro G.
dc.contributor.authorFerramacho, Luis
dc.date.accessioned2018-02-06T13:33:59Z
dc.date.available2018-02-06T13:33:59Z
dc.date.issued2013
dc.description.abstractThe 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 fNL, with an error close to σfNLen_US
dc.description.accreditationWeb of Science
dc.identifier.citationCamera, S. et al. (2013). Cosmology on ultralarge scales with intensity mapping of the neutral hydrogen 21 cm emission: limits on primodial non-gaussianity. Physical Review Letters, 111: 171302en_US
dc.identifier.issn0031-9007
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.111.171302
dc.identifier.urihttp://hdl.handle.net/10566/3480
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherAmerican Physical Societyen_US
dc.rightsThis is the pre-print version (from arXiv:1305.6928) of the article published online at: http://dx.doi.org/10.1103/PhysRevLett.111.171302
dc.status.ispeerreviewedTRUE
dc.subjectUniverseen_US
dc.subjectUnresolved mapsen_US
dc.subjectGalaxiesen_US
dc.subjectHI intensityen_US
dc.subjectNon-Gaussianity parameteren_US
dc.titleCosmology on ultralarge scales with intensity mapping of the neutral hydrogen 21 cm emission: limits on primodial non-gaussianityen_US
dc.typeArticleen_US

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