Model selection forecasts for the spectral index from the Planck satellite

Journal Article · Thu Jun 15 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.123524· OSTI ID:20774876

Pahud, Cedric; Liddle, Andrew R; Mukherjee, Pia; Parkinson, David ^[1]

---

1. Astronomy Centre, University of Sussex, Brighton BN1 9QH (United Kingdom)

The recent WMAP3 results have placed measurements of the spectral index n{sub S} in an interesting position. While parameter estimation techniques indicate that the Harrison-Zel'dovich spectrum n{sub S}=1 is strongly excluded (in the absence of tensor perturbations), Bayesian model selection techniques reveal that the case against n{sub S}=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.

• OSTI ID: 20774876
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 12; Other Information: DOI: 10.1103/PhysRevD.73.123524; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
COSMOLOGY
DISTURBANCES
ENERGY SPECTRA
INDEXES
RELICT RADIATION
TENSORS