Probing the primordial Universe with MeerKAT and DES

Probing the primordial Universe with MeerKAT and DES

Abstract It is usually assumed that we will need to wait until next-generation surveys like Euclid, LSST and SKA, in order to improve on the current best constraints on primordial non-Gaussianity from the Planck experiment. We show that two contemporary surveys, with the SKA precursor MeerKAT and th...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society Vol. 466; no. 3; pp. 2780 - 2786
Main Authors: Fonseca, José, Maartens, Roy, Santos, Mário G.
Format: Journal Article
Language:English
Published: London Oxford University Press 21-04-2017
Subjects:
Accuracy
Astronomy
Dark energy
Measurement
Normal distribution
Precursors
Sky surveys (astronomy)
Time measurement
Universe
cosmology: miscellaneous
large-scale structure of Universe
Online Access:Get full text
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Summary:Abstract It is usually assumed that we will need to wait until next-generation surveys like Euclid, LSST and SKA, in order to improve on the current best constraints on primordial non-Gaussianity from the Planck experiment. We show that two contemporary surveys, with the SKA precursor MeerKAT and the Dark Energy Survey (DES), can be combined using the multitracer technique to deliver an accuracy on measurement of f NL that is up to three times better than Planck.
Bibliography:ObjectType-Article-1
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ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stw3248