A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data
A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data
We present a measurement of gravitational lensing over 1500 deg$^2$ of the Southern sky using SPT-3G temperature data at 95 and 150 GHz taken in 2018. The lensing amplitude relative to a fiducial Planck 2018 $\Lambda$CDM cosmology is found to be $1.020\pm0.060$, excluding instrumental and astrophysical systematic uncertainties. We conduct extensive systematic and null tests to check the robustness of the lensing measurements, and report a minimum-variance combined lensing power spectrum over angular multipoles of $50<L<2000$, which we use to constrain cosmological models. When analyzed alone and jointly with primary cosmic microwave background (CMB) spectra within the $\Lambda$CDM model, our lensing amplitude measurements are consistent with measurements from SPT-SZ, SPTpol, ACT, and Planck. Incorporating loose priors on the baryon density and other parameters including uncertainties on a foreground bias template, we obtain a $1\sigma$ constraint on $\sigma_8 \Omega_{\rm m}^{0.25}=0.595 \pm 0.026$ using the SPT-3G 2018 lensing data alone, where $\sigma_8$ is a common measure of the amplitude of structure today and $\Omega_{\rm m}$ is the matter density parameter. Combining SPT-3G 2018 lensing measurements with baryon acoustic oscillation (BAO) data, we derive parameter constraints of $\sigma_8 = 0.810 \pm 0.033$, $S_8 \equiv \sigma_8(\Omega_{\rm m}/0.3)^{0.5}= 0.836 \pm 0.039$, and Hubble constant $H_0 =68.8^{+1.3}_{-1.6}$ km s$^{-1}$ Mpc$^{-1}$. Using CMB anisotropy and lensing measurements from SPT-3G only, we provide independent constraints on the spatial curvature of $\Omega_{K} = 0.014^{+0.023}_{-0.026}$ (95% C.L.) and the dark energy density of $\Omega_\Lambda = 0.722^{+0.031}_{-0.026}$ (68% C.L.). When combining SPT-3G lensing data with SPT-3G CMB anisotropy and BAO data, we find an upper limit on the sum of the neutrino masses of $\sum m_{\nu}< 0.30$ eV (95% C.L.).
A. A. Stark、D. Dutcher、K. Levy、G. Wang、G. P. Holder、L. R. Vale、S. Raghunathan、C. L. Reichardt、A. H. Harke-Hosemann、J. Fu、B. Ansarinejad、E. Schiappucci、J. Pearson、C. Umilta、W. L. K. Wu、R. W. Gardner、S. Kuhlmann、Y. Omori、J. -F. Cliche、K. T. Story、F. K¨|ruzor¨|、J. W. Henning、S. Padin、N. Huang、N. Goeckner-Wald、J. Stephen、T. -L. Chou、F. Menanteau、F. R. Bouchet、P. A. R. Ade、J. E. Carlstrom、J. Montgomery、C. Trendafilova、S. Galli、L. Bryant、V. Yefremenko、K. L. Thompson、F. W. Carter、C. Daley、M. Archipley、M. A. Dobbs、K. Byrum、G. Smecher、R. Basu Thakur、A. T. Lee、M. R. Young、Z. Pan、E. Hivon、M. Millea、F. Bianchini、A. M. Kofman、L. Knox、F. Ge、P. S. Barry、C. -L. Kuo、K. Prabhu、K. Fichman、J. C. Hood、L. Balkenhol、A. Doussot、T. W. Cecil、Y. Nakato、A. Cukierman、K. R. Ferguson、C. Feng、A. Suzuki、E. Shirokoff、N. Gupta、K. Aylor、E. Anderes、D. L. Kubik、S. Guns、D. Riebel、J. A. Sobrin、H. -M. Cho、C. Tucker、T. M. Crawford、D. Howe、R. Gualtieri、J. T. Sayre、S. S. Meyer、H. Nguyen、J. D. Vieira、A. Coerver、G. I. Noble、K. Benabed、T. S. Khaire、M. Jonas、V. Novosad、A. Foster、C. L. Chang、B. Thorne、N. L. Harrington、E. M. Leitch、W. Quan、A. Maniyar、D. Michalik、N. Whitehorn、T. Natoli、W. L. Holzapfel、K. W. Yoon、B. A. Benson、S. Takakura、A. N. Bender、A. Nadolski、O. Jeong、K. R. Dibert、J. E. Ruhl、L. E. Bleem、C. Lu、A. E. Gambrel、J. Ding、J. A. Zebrowski、W. Everett、N. W. Halverson、G. Chen、A. E. Lowitz、F. Guidi、A. J. Anderson、Z. Ahmed、C. Tandoi、M. Korman、T. de Haan、B. Riedel、G. C. Hilton、K. D. Irwin、M. Rahimi、P. Chaubal、P. M. Chichura、E. Camphuis、K. Vanderlinde、E. V. Denison、P. Paschos、A. Jones、A. Rahlin、C. M. Posada
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A. A. Stark,D. Dutcher,K. Levy,G. Wang,G. P. Holder,L. R. Vale,S. Raghunathan,C. L. Reichardt,A. H. Harke-Hosemann,J. Fu,B. Ansarinejad,E. Schiappucci,J. Pearson,C. Umilta,W. L. K. Wu,R. W. Gardner,S. Kuhlmann,Y. Omori,J. -F. Cliche,K. T. Story,F. K¨|ruzor¨|,J. W. Henning,S. Padin,N. Huang,N. Goeckner-Wald,J. Stephen,T. -L. Chou,F. Menanteau,F. R. Bouchet,P. A. R. Ade,J. E. Carlstrom,J. Montgomery,C. Trendafilova,S. Galli,L. Bryant,V. Yefremenko,K. L. Thompson,F. W. Carter,C. Daley,M. Archipley,M. A. Dobbs,K. Byrum,G. Smecher,R. Basu Thakur,A. T. Lee,M. R. Young,Z. Pan,E. Hivon,M. Millea,F. Bianchini,A. M. Kofman,L. Knox,F. Ge,P. S. Barry,C. -L. Kuo,K. Prabhu,K. Fichman,J. C. Hood,L. Balkenhol,A. Doussot,T. W. Cecil,Y. Nakato,A. Cukierman,K. R. Ferguson,C. Feng,A. Suzuki,E. Shirokoff,N. Gupta,K. Aylor,E. Anderes,D. L. Kubik,S. Guns,D. Riebel,J. A. Sobrin,H. -M. Cho,C. Tucker,T. M. Crawford,D. Howe,R. Gualtieri,J. T. Sayre,S. S. Meyer,H. Nguyen,J. D. Vieira,A. Coerver,G. I. Noble,K. Benabed,T. S. Khaire,M. Jonas,V. Novosad,A. Foster,C. L. Chang,B. Thorne,N. L. Harrington,E. M. Leitch,W. Quan,A. Maniyar,D. Michalik,N. Whitehorn,T. Natoli,W. L. Holzapfel,K. W. Yoon,B. A. Benson,S. Takakura,A. N. Bender,A. Nadolski,O. Jeong,K. R. Dibert,J. E. Ruhl,L. E. Bleem,C. Lu,A. E. Gambrel,J. Ding,J. A. Zebrowski,W. Everett,N. W. Halverson,G. Chen,A. E. Lowitz,F. Guidi,A. J. Anderson,Z. Ahmed,C. Tandoi,M. Korman,T. de Haan,B. Riedel,G. C. Hilton,K. D. Irwin,M. Rahimi,P. Chaubal,P. M. Chichura,E. Camphuis,K. Vanderlinde,E. V. Denison,P. Paschos,A. Jones,A. Rahlin,C. M. Posada.A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data[EB/OL].(2023-08-22)[2025-06-07].https://arxiv.org/abs/2308.11608.点此复制
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