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arXiv · 2607.05784

CMB Lensing Reconstruction Using Two Years of Temperature Data from the SPT-3G Summer Survey

K. Levy·S. Raghunathan·F. Guidi·Y. Li·E. Anderes·A. J. Anderson·B. Ansarinejad·M. Archipley·L. Balkenhol·D. R. Barron·K. Benabed·A. N. Bender·B. A. Benson·F. Bianchini·L. E. Bleem·S. Bocquet·F. R. Bouchet·E. Camphuis·M. G. Campitiello·J. E. Carlstrom·J. Carron·C. L. Chang·P. M. Chichura·A. Chokshi·T. -L. Chou·A. Coerver·T. M. Crawford·C. Daley·T. de Haan·K. R. Dibert·M. A. Dobbs·M. Doohan·D. Dutcher·C. Feng·K. R. Ferguson·N. C. Ferree·K. Fichman·A. Foster·S. Galli·A. E. Gambrel·A. K. Gao·F. Ge·S. Guns·N. W. Halverson·E. Hivon·G. P. Holder·W. L. Holzapfel·J. C. Hood·A. Hryciuk·N. Huang·T. Jhaveri·F. Kéruzoré·A. R. Khalife·L. Knox·K. Kornoelje·C. -L. Kuo·A. E. Lowitz·C. Lu·G. P. Lynch·T. J. Maccarone·A. S. Maniyar·E. S. Martsen·F. Menanteau·M. Millea·J. Montgomery·Y. Nakato·T. Natoli·A. Ouellette·Z. Pan·P. Paschos·K. A. Phadke·A. W. Pollak·K. Prabhu·W. Quan·M. Rahimi·A. Rahlin·C. L. Reichardt·M. Rouble·J. E. Ruhl·A. C. Silva Oliveira·A. Simpson·J. A. Sobrin·A. A. Stark·J. Stephen·C. Tandoi·C. Trendafilova·J. D. Vieira·A. G. Vieregg·A. Vitrier·Y. Wan·N. Whitehorn·W. L. K. Wu·M. R. Young·J. A. Zebrowski
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Abstract

We present the first reconstruction of the cosmic microwave background (CMB) lensing potential from the SPT-3G Summer survey using two years of temperature data. The Summer survey has a total area of approximately 2640 deg$^2$, split into three fields covering 1210, 570, and 860 deg$^2$, respectively. A joint analysis of the three Summer fields yields a lensing amplitude of $A^{\rm comb} = 1.015 \pm 0.053$ relative to a fiducial Planck 2018 $\Lambda$CDM cosmology for the multipole range $50 < L < 2000$. These early results from the SPT-3G Summer survey highlight the potential for increasing the signal-to-noise ratio when combining the Summer fields with the SPT-3G Main and Wide fields for a total SPT-3G survey area of $\sim$ 10,000 deg$^2$.

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K. Levy, S. Raghunathan, F. Guidi, Y. Li, E. Anderes, A. J. Anderson, B. Ansarinejad, M. Archipley, L. Balkenhol, D. R. Barron, K. Benabed, A. N. Bender, B. A. Benson, F. Bianchini, L. E. Bleem, S. Bocquet, F. R. Bouchet, E. Camphuis, M. G. Campitiello, J. E. Carlstrom, J. Carron, C. L. Chang, P. M. Chichura, A. Chokshi, T. -L. Chou, A. Coerver, T. M. Crawford, C. Daley, T. de Haan, K. R. Dibert, M. A. Dobbs, M. Doohan, D. Dutcher, C. Feng, K. R. Ferguson, N. C. Ferree, K. Fichman, A. Foster, S. Galli, A. E. Gambrel, A. K. Gao, F. Ge, S. Guns, N. W. Halverson, E. Hivon, G. P. Holder, W. L. Holzapfel, J. C. Hood, A. Hryciuk, N. Huang, T. Jhaveri, F. Kéruzoré, A. R. Khalife, L. Knox, K. Kornoelje, C. -L. Kuo, A. E. Lowitz, C. Lu, G. P. Lynch, T. J. Maccarone, A. S. Maniyar, E. S. Martsen, F. Menanteau, M. Millea, J. Montgomery, Y. Nakato, T. Natoli, A. Ouellette, Z. Pan, P. Paschos, K. A. Phadke, A. W. Pollak, K. Prabhu, W. Quan, M. Rahimi, A. Rahlin, C. L. Reichardt, M. Rouble, J. E. Ruhl, A. C. Silva Oliveira, A. Simpson, J. A. Sobrin, A. A. Stark, J. Stephen, C. Tandoi, C. Trendafilova, J. D. Vieira, A. G. Vieregg, A. Vitrier, Y. Wan, N. Whitehorn, W. L. K. Wu, M. R. Young, J. A. Zebrowski. 2026-07-07. CMB Lensing Reconstruction Using Two Years of Temperature Data from the SPT-3G Summer Survey. https://arxiv.org/abs/2607.05784

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