CENTRA Seminar - Pushing The Limits On Primordial Non-Gaussianity II - 6 março 2014

Pushing The Limits On Primordial Non-Gaussianity II: Cosmology on Ultralarge Scales with Intensity Mapping of Neutral Hydrogen Emission

Stefano Camera

CENTRA-IST

Abstract / Resumo 

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 between 1 and 5 are the best hope of accessing the ultra large-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 1.

Meeting room on the 2nd floor of the Physics Department building

Watch it live on:  http://www.ustream.tv/channel/centra---ist-seminars (also available on CENTRA TV webpage)
Talks' slides: TBA

Recorder Seminar: TBA

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