# Dark Energy Survey Year 1 Results: cross-correlation between Dark Energy Survey Y1 galaxy weak lensing and South Pole Telescope + *Planck* CMB weak lensing

Research output: Contribution to journal › Article

### Standard

**Dark Energy Survey Year 1 Results: cross-correlation between Dark Energy Survey Y1 galaxy weak lensing and South Pole Telescope + Planck CMB weak lensing.** / DES Collaboration; SPT Collaboration ; Thomas, Daniel.

Research output: Contribution to journal › Article

### Harvard

*Planck*CMB weak lensing',

*Physical Review D*, vol. 100, no. 4, 043517. https://doi.org/10.1103/PhysRevD.100.043517

### APA

*Planck*CMB weak lensing.

*Physical Review D*,

*100*(4), [043517]. https://doi.org/10.1103/PhysRevD.100.043517

### Vancouver

*Planck*CMB weak lensing. Physical Review D. 2019 Aug 12;100(4). 043517. https://doi.org/10.1103/PhysRevD.100.043517

### Author

### Bibtex

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### RIS

TY - JOUR

T1 - Dark Energy Survey Year 1 Results: cross-correlation between Dark Energy Survey Y1 galaxy weak lensing and South Pole Telescope + Planck CMB weak lensing

AU - DES Collaboration

AU - SPT Collaboration

AU - Thomas, Daniel

PY - 2019/8/12

Y1 - 2019/8/12

N2 - We cross-correlate galaxy weak lensing measurements from the Dark Energy Survey (DES) year-one data with a cosmic microwave background (CMB) weak lensing map derived from South Pole Telescope (SPT) and Planck data, with an effective overlapping area of 1289 deg2. With the combined measurements from four source galaxy redshift bins, we obtain a detection significance of 5.8σ. We fit the amplitude of the correlation functions while fixing the cosmological parameters to a fiducial ΛCDM model, finding A = 0.99 ± 0.17. We additionally use the correlation function measurements to constrain shear calibration bias, obtaining constraints that are consistent with previous DES analyses. Finally, when performing a cosmological analysis under the ΛCDM model, we obtain the marginalized constraints of Ωm = 0.261 + 0.070−0.051 and S8 ≡ σ8√Ωm/0.3=0.660+0.085−0.100. These measurements are used in a companion work that presents cosmological constraints from the joint analysis of two-point functions among galaxies, galaxy shears, and CMB lensing using DES, SPT, and Planck data.

AB - We cross-correlate galaxy weak lensing measurements from the Dark Energy Survey (DES) year-one data with a cosmic microwave background (CMB) weak lensing map derived from South Pole Telescope (SPT) and Planck data, with an effective overlapping area of 1289 deg2. With the combined measurements from four source galaxy redshift bins, we obtain a detection significance of 5.8σ. We fit the amplitude of the correlation functions while fixing the cosmological parameters to a fiducial ΛCDM model, finding A = 0.99 ± 0.17. We additionally use the correlation function measurements to constrain shear calibration bias, obtaining constraints that are consistent with previous DES analyses. Finally, when performing a cosmological analysis under the ΛCDM model, we obtain the marginalized constraints of Ωm = 0.261 + 0.070−0.051 and S8 ≡ σ8√Ωm/0.3=0.660+0.085−0.100. These measurements are used in a companion work that presents cosmological constraints from the joint analysis of two-point functions among galaxies, galaxy shears, and CMB lensing using DES, SPT, and Planck data.

KW - RCUK

KW - STFC

U2 - 10.1103/PhysRevD.100.043517

DO - 10.1103/PhysRevD.100.043517

M3 - Article

VL - 100

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 4

M1 - 043517

ER -

ID: 15886619