Joint measurement of lensing-galaxy correlations using SPT and DES SV data

E. Baxter*, J. Clampitt, T. Giannantonio, S. Dodelson, B. Jain, D. Huterer, L. Bleem, T. Crawford, G. Efstathiou, P. Fosalba, D. Kirk, J. Kwan, C. Śanchez, K. Story, M. A. Troxel, T. M C Abbott, F. B. Abdalla, R. Armstrong, A. Benoit-Lévy, B. BensonG. M. Bernstein, R. A. Bernstein, E. Bertin, D. Brooks, J. Carlstrom, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, R. Chown, M. Crocce, C. E. Cunha, L. N. da Costa, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A. E. Evrard, A. Fausti Neto, B. Flaugher, J. Frieman, D. Gruen, R. A. Gruendl, G. Gutierrez, T. de Haan, G. Holder, K. Honscheid, Z. Hou, D. J. James, K. Kuehn, N. Kuropatkin, M. Lima, M. March, J. L. Marshall, P. Martini, P. Melchior, C. J. Miller, R. Miquel, J. J. Mohr, B. Nord, Y. Omori, A. A. Plazas, C. Reichardt, A. K. Romer, E. S. Rykoff, E. Sanchez, I. Sevilla-Noarbe, E. Sheldon, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, A. Stark, M. E C Swanson, G. Tarle, D. Thomas, A. R. Walker, R. H. Wechsler

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We measure the correlation of galaxy lensing and cosmic microwave background lensing with a set of galaxies expected to trace the matter density field. The measurements are performed using pre-survey Dark Energy Survey (DES) Science Verification optical imaging data and millimetre-wave data from the 2500 sq. deg. South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. The two lensing-galaxy correlations are jointly fit to extract constraints on cosmological parameters, constraints on the redshift distribution of the lens galaxies, and constraints on the absolute shear calibration of DES galaxy-lensing measurements. We show that an attractive feature of these fits is that they are fairly insensitive to the clustering bias of the galaxies used as matter tracers. The measurement presented in this work confirms that DES and SPT data are consistent with each other and with the currently favoured ∩ cold dark matter cosmological model. It also demonstrates that joint lensing-galaxy correlation measurement considered here contains a wealth of information that can be extracted using current and future surveys.

    Original languageEnglish
    Pages (from-to)4099-4114
    Number of pages16
    JournalMonthly Notices of the Royal Astronomical Society
    Volume461
    Issue number4
    Early online date4 Jul 2016
    DOIs
    Publication statusPublished - 1 Oct 2016

    Keywords

    • Cosmic background radiation
    • Gravitational lensing: weak
    • Large-scale structure of the Universe

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