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Model selection forecasts for the spectral index from the Planck satellite

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journal contribution
posted on 2023-06-08, 07:37 authored by Cédric Pahud, Andrew R Liddle, Pia Mukherjee, David Parkinson
The recent WMAP3 results have placed measurements of the spectral index nS in an interesting position. While parameter estimation techniques indicate that the Harrison–Zel’dovich spectrum nS=1 is strongly excluded (in the absence of tensor perturbations), Bayesian model selection techniques reveal that the case against nS=1 is not yet conclusive. In this paper, we forecast the ability of the Planck satellite mission to use Bayesian model selection to convincingly exclude (or favor) the Harrison–Zel’dovich model.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

12

Volume

73

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-10

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