When can the Planck satellite measure spectral index running?

被引：17

作者：

Pahud, Cedric ^{[1
]}

Liddle, Andrew R. ^{[1
]}

Mukherjee, Pia ^{[1
]}

Parkinson, David ^{[1
]}

机构：

[1] Univ Sussex, Ctr Astron, Brighton BN1 9QH, E Sussex, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 381卷 / 02期

关键词：

cosmology; theory;

D O I：

10.1111/j.1365-2966.2007.12310.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We 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.

引用

页码：489 / 493

页数：5

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