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

  • Author(s): Omori, Y
  • Baxter, EJ
  • Chang, C
  • Kirk, D
  • Alarcon, A
  • Bernstein, GM
  • Bleem, LE
  • Cawthon, R
  • Choi, A
  • Chown, R
  • Crawford, TM
  • Davis, C
  • De Vicente, J
  • DeRose, J
  • Dodelson, S
  • Eifler, TF
  • Fosalba, P
  • Friedrich, O
  • Gatti, M
  • Gaztanaga, E
  • Giannantonio, T
  • Gruen, D
  • Hartley, WG
  • Holder, GP
  • Hoyle, B
  • Huterer, D
  • Jain, B
  • Jarvis, M
  • Krause, E
  • MacCrann, N
  • Miquel, R
  • Prat, J
  • Rau, MM
  • Reichardt, CL
  • Rozo, E
  • Samuroff, S
  • Sánchez, C
  • Secco, LF
  • Sheldon, E
  • Simard, G
  • Troxel, MA
  • Vielzeuf, P
  • Wechsler, RH
  • Zuntz, J
  • Abbott, TMC
  • Abdalla, FB
  • Allam, S
  • Annis, J
  • Avila, S
  • Aylor, K
  • Benson, BA
  • Bertin, E
  • Bridle, SL
  • Brooks, D
  • Burke, DL
  • Carlstrom, JE
  • Carnero Rosell, A
  • Carrasco Kind, M
  • Carretero, J
  • Castander, FJ
  • Chang, CL
  • Cho, H-M
  • Crites, AT
  • Crocce, M
  • Cunha, CE
  • da Costa, LN
  • de Haan, T
  • Desai, S
  • Diehl, HT
  • Dietrich, JP
  • Dobbs, MA
  • Everett, WB
  • Fernandez, E
  • Flaugher, B
  • Frieman, J
  • García-Bellido, J
  • George, EM
  • Gruendl, RA
  • Gutierrez, G
  • Halverson, NW
  • Harrington, NL
  • Hollowood, DL
  • Honscheid, K
  • Holzapfel, WL
  • Hou, Z
  • Hrubes, JD
  • James, DJ
  • Jeltema, T
  • Kuehn, K
  • Kuropatkin, N
  • Lima, M
  • Lin, H
  • Lee, AT
  • Leitch, EM
  • Luong-Van, D
  • Maia, MAG
  • Manzotti, A
  • Marrone, DP
  • Marshall, JL
  • Martini, P
  • McMahon, JJ
  • Melchior, P
  • Menanteau, F
  • Meyer, SS
  • Mocanu, LM
  • Mohr, JJ
  • Natoli, T
  • Ogando, RLC
  • Padin, S
  • Plazas, AA
  • Pryke, C
  • Romer, AK
  • Roodman, A
  • Ruhl, JE
  • Rykoff, ES
  • Sanchez, E
  • Scarpine, V
  • Schaffer, KK
  • Schindler, R
  • Sevilla-Noarbe, I
  • Shirokoff, E
  • Smith, M
  • Smith, RC
  • Soares-Santos, M
  • Sobreira, F
  • Staniszewski, Z
  • Stark, AA
  • Story, KT
  • Suchyta, E
  • Swanson, MEC
  • Tarle, G
  • Thomas, D
  • Vanderlinde, K
  • Vieira, JD
  • Vikram, V
  • Walker, AR
  • Weller, J
  • Williamson, R
  • Wu, WLK
  • Zahn, O
  • et al.
Abstract

We cross-correlate galaxy weak lensing measurements from the Dark Energy Survey (DES) year-one (Y1) 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 deg$^{2}$. With the combined measurements from four source galaxy redshift bins, we reject the hypothesis of no lensing with a significance of $10.8\sigma$. When employing angular scale cuts, this significance is reduced to $6.8\sigma$, which remains the highest signal-to-noise measurement of its kind to date. We fit the amplitude of the correlation functions while fixing the cosmological parameters to a fiducial $\Lambda$CDM model, finding $A = 0.99 \pm 0.17$. 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 $\Lambda$CDM model, we obtain the marginalized constraints of $\Omega_{\rm m}=0.261^{+0.070}_{-0.051}$ and $S_{8}\equiv \sigma_{8}\sqrt{\Omega_{\rm m}/0.3} = 0.660^{+0.085}_{-0.100}$. 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.

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