When can the Planck satellite measure spectral index running?

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dc.creatorPahud, Cédric
dc.creatorLiddle, Andrew R.
dc.creatorMukherjee, Pia
dc.creatorParkinson, David
dc.date2007-01-16
dc.date2007-09-04
dc.date.accessioned2026-07-07T11:42:43Z
dc.date.available2026-07-07T11:42:43Z
dc.descriptionWe use model selection forecasting to assess the ability of the Planck satellite to make a positive detection of spectral index running. We simulate Planck data for a range of assumed cosmological parameter values, and carry out a three-way Bayesian model comparison of a Harrison-Zel'dovich model, a power-law model, and a model including running. We find that Planck will be able to strongly support running only if its true value satisfies |dn/d ln k| > 0.02.
dc.description5 pages with 7 figures included. Full resolution PDF at http://astronomy.susx.ac.uk/~andrewl/planckev2D.pdf Minor updates to match version accepted by MNRAS
dc.identifierhttps://arxiv.org/abs/astro-ph/0701481
dc.identifierhttp://arxiv.org/abs/astro-ph/0701481
dc.identifierMon.Not.Roy.Astron.Soc.381:489-493,2007
dc.identifierdoi:10.1111/j.1365-2966.2007.12310.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200982
dc.subjectAstrophysics
dc.titleWhen can the Planck satellite measure spectral index running?
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