Biases on the cosmological parameters and thermal SZ residuals

Details Biases on the cosmological parameters and thermal SZ residuals Biases on the cosmological parameters and thermal SZ residuals

2008-09-08

arxiv.org/abs/0809.1364v2

Mon.Not.Roy.Astron.Soc.392:1153-1158,2008

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, published in MNRAS

Scientific paper

10.1111/j.1365-2966.2008.14105.x

We examine the biases induced on cosmological parameters when the presence of secondary anisotropies is not taken into account in Cosmic Microwave Background analyses. We first develop an exact analytical expression for computing the biases on parameters when any additive signal is neglected in the analysis. We then apply it in the context of the forthcoming Planck experiment. For illustration, we investigate the effect of the sole residual thermal Sunyaev--Zel'dovich signal that remains after cluster extraction. We find in particular that analyses neglecting the presence of this contribution introduce on the cosmological parameters n_s and tau biases, at least 6.5 and 2.9 times their one sigma confidence intervals. The Omega_b parameter is also biased to a lesser extent.

Affiliated with

Also associated with

No associations

Rating

Biases on the cosmological parameters and thermal SZ residuals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Biases on the cosmological parameters and thermal SZ residuals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biases on the cosmological parameters and thermal SZ residuals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-30959