Figure 6 from Constraints on Cosmology from the Cosmic Microwave Background Power Spectrum of the 2500 deg2 SPT-SZ Survey

Image Details

View Article Bookmark & Share

Choose export citation format:

Export Citation

Hi-Resolution Export to PDF PPT Format

Constraints on Cosmology from the Cosmic Microwave Background Power Spectrum of the 2500 deg2 SPT-SZ Survey

Authors: Z. Hou, C. L. Reichardt, K. T. Story, B. Follin, R. Keisler, K. A. Aird, B. A. Benson, L. E. Bleem, J. E. Carlstrom, C. L. Chang, H.-M. Cho, T. M. Crawford, A. T. Crites, T. de Haan, R. de Putter, M. A. Dobbs, S. Dodelson, J. Dudley, E. M. George, N. W. Halverson, G. P. Holder, W. L. Holzapfel, S. Hoover, J. D. Hrubes, M. Joy, L. Knox, A. T. Lee, E. M. Leitch, M. Lueker, D. Luong-Van, J. J. McMahon, J. Mehl, S. S. Meyer, M. Millea, J. J. Mohr, T. E. Montroy, S. Padin, T. Plagge, C. Pryke, J. E. Ruhl, J. T. Sayre, K. K. Schaffer, L. Shaw, E. Shirokoff, H. G. Spieler, Z. Staniszewski, A. A. Stark, A. van Engelen, K. Vanderlinde, J. D. Vieira, R. Williamson, and O. Zahn

Hou et al. 2014 The Astrophysical Journal 782 74.

Provider: AAS Journals

Caption: Figure 6.

This figure shows the effects of massive neutrinos on the CMB power spectrum. The curves show the ratio of models with ∑ m _ν = 0.5 (dashed green) and 1.0 eV (solid blue), respectively, to the best-fit ΛCDM (∑ m _ν = 0 eV) model spectrum for SPT+ WMAP 7. When increasing ∑ m _ν we adjust downward to keep θ _s fixed. On large scales, we see a reduction in the power added by the late-time ISW effect. On intermediate scales below the neutrino free-streaming length, we see a reduction in the power contributed by the early ISW effect. On scales smaller than the neutrino free-streaming length, the more rapid decay of gravitational potentials boosts the early ISW power. The amplitude of the early ISW effect is damped at l gsim 500 by averaging over multiple positive and negative contributions.

Other Images in This Article

Copyright and Terms & Conditions