A cosmic microwave background lensing mass map and its correlation with the cosmic infrared background

G. P. Holder, M. P. Viero, O. Zahn, K. A. Aird, B. A. Benson, S. Bhattacharya, L. E. Bleem, J. Bock, M. Brodwin, J. E. Carlstrom, C. L. Chang, H. M. Cho, A. Conley, T. M. Crawford, A. T. Crites, T. De Haan, M. A. Dobbs, J. Dudley, E. M. George, N. W. HalversonW. L. Holzapfel, S. Hoover, Z. Hou, J. D. Hrubes, R. Keisler, L. Knox, A. T. Lee, E. M. Leitch, M. Lueker, D. Luong-Van, G. Marsden, D. P. Marrone, J. J. McMahon, J. Mehl, S. S. Meyer, M. Millea, J. J. Mohr, T. E. Montroy, S. Padin, T. Plagge, C. Pryke, C. L. Reichardt, J. E. Ruhl, J. T. Sayre, K. K. Schaffer, B. Schulz, L. Shaw, E. Shirokoff, H. G. Spieler, Z. Staniszewski, A. A. Stark, K. T. Story, A. Van Engelen, K. Vanderlinde, J. D. Vieira, R. Williamson, M. Zemcov

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

We use a temperature map of the cosmic microwave background (CMB) obtained using the South Pole Telescope at 150 GHz to construct a map of the gravitational convergence to z ∼ 1100, revealing the fluctuations in the projected mass density. This map shows individual features that are significant at the ∼4σ level, providing the first image of CMB lensing convergence. We cross-correlate this map with Herschel/SPIRE maps covering 90 deg2 at wavelengths of 500, 350, and 250 μm. We show that these submillimeter (submm) wavelength maps are strongly correlated with the lensing convergence map, with detection significances in each of the three submm bands ranging from 6.7σ to 8.8σ. We fit the measurement of the cross power spectrum assuming a simple constant bias model and infer bias factors of b = 1.3-1.8, with a statistical uncertainty of 15%, depending on the assumed model for the redshift distribution of the dusty galaxies that are contributing to the Herschel/SPIRE maps.

Original languageEnglish (US)
Article numberL16
JournalAstrophysical Journal Letters
Volume771
Issue number1
DOIs
StatePublished - Jul 1 2013

Keywords

  • cosmic background radiation
  • galaxies: structure

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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