Baxter, E;
Clampitt, J;
Giannantonio, T;
Dodelson, S;
Jain, B;
Huterer, D;
Bleem, L;
... Wechsler, RH; + view all
(2016)
Joint measurement of lensing-galaxy correlations using SPT and DES SV data.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
, 461
(4)
pp. 4099-4114.
10.1093/mnras/stw1584.
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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 Λ 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.
| Type: | Article |
|---|---|
| Title: | Joint measurement of lensing-galaxy correlations using SPT and DES SV data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stw1584 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stw1584 |
| Additional information: | © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society |
| Keywords: | gravitational lensing: weak, cosmic background radiation, large-scale structure of the Universe |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1540210 |
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