期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 507, 期 1, 页码 510-523出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab2184
关键词
gravitational lensing: weak; cosmology: cosmic background radiation; cosmology: large-scale structure of Universe
资金
- U.S. Department of Energy
- U.S. National Science Foundation
- Ministry of Science and Education of Spain
- Science and Technology Facilities Council of the United Kingdom
- Higher Education Funding Council for England
- National Center for Supercomputing Applications at the University of Illinois at UrbanaChampaign
- Kavli Institute of Cosmological Physics at the University of Chicago
- Center for Cosmology and Astro-Particle Physics at the Ohio State University
- Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University
- Financiadora de Estudos e Projetos
- Fundacao Carlos Chagas Filho de Amparo
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- Ministerio da Ciencia, Tecnologia e Inovacao
- Deutsche Forschungsgemeinschaft
- Collaborating Institutions in the Dark Energy Survey
- Argonne National Laboratory
- University of California at Santa Cruz
- University of Cambridge
- Centro de Investigaciones Energeticas
- Medioambientales y Tecnologicas-Madrid
- University of Chicago
- University College London
- DES-Brazil Consortium
- University of Edinburgh
- Eidgenossische Technische Hochschule (ETH) Zurich
- Fermi National Accelerator Laboratory
- University of Illinois at Urbana-Champaign
- Institut de Ciencies de l'Espai (IEEC/CSIC)
- Institut de Fisica d'Altes Energies, Lawrence Berkeley National Laboratory
- LudwigMaximilians Universitat Munchen
- associated Excellence Cluster Universe, the University of Michigan
- National Optical Astronomy Observatory
- University of Nottingham
- Ohio State University
- University of Pennsylvania
- University of Portsmouth
- SLAC National Accelerator Laboratory, Stanford University
- University of Sussex
- Texas AM University
- National Astronomical Observatories of China
- Chinese Academy of Sciences [XDB09000000]
- Special Fund for Astronomy from the Ministry of Finance
- External Cooperation Program of Chinese Academy of Sciences [114A11KYSB20160057]
- Chinese National Natural Science Foundation [11433005]
- National Aeronautics and Space Administration
- U.S. Department of Energy [DE-AC0205CH11231]
- National Energy Research Scientific Computing Center
- DOE Office of Science User Facility
- U.S. National Science Foundation, Division of Astronomical Sciences [AST-0950945]
- Spanish MultiDark Consolider Project [CSD2009-00064]
- Gauss Centre for Supercomputing e.V.
- Partnership for Advanced Supercomputing in Europe (PRACE)
In this study, the imprints of large-scale structures on the Cosmic Microwave Background (CMB) were studied through CMB lensing and Integrated Sachs-Wolfe (ISW) signals. The stacked CMB lensing signal was found to be consistent with data, while the stacked ISW signal did not show a significant signal from voids and the signal from clusters was weakly detected. These results strongly deviate from previous claims of ISW signals at levels exceeding the Lambda CDM prediction. The comparison with past work and possible explanations for this discrepancy were also discussed.
The imprints of large-scale structures on the Cosmic Microwave Background (CMB) can be studied via the CMB lensing and Integrated Sachs-Wolfe (ISW) signals. In particular, the stacked ISW signal around supervoids has been claimed in several works to be anomalously high. In this study, we find cluster and void superstructures using four tomographic redshift bins with 0 < z < 0.8 from the DESI Legacy Survey and measure the stacked CMB lensing and ISW signals around them. To compare our measurements with Lambda CDM model predictions, we construct a mock catalogue with matched galaxy number density and bias and apply the same photo-z uncertainty as the data. The consistency between the mock and the data is verified via the stacked galaxy density profiles around the superstructures and their quantity. The corresponding lensing convergence and ISW maps are then constructed and compared. The stacked lensing signal agrees with data well except at the highest redshift bin in density peaks, where the mock prediction is significantly higher, by approximately a factor of 1.3. The stacked ISW signal is generally consistent with the mock prediction. We do not obtain a significant signal from voids, A(ISW) = -0.10 +/- 0.69, and the signal from clusters, A(ISW) = 1.52 +/- 0.72, is at best weakly detected. However, these results are strongly inconsistent with previous claims of ISW signals at many times the level of the Lambda CDM prediction. We discuss the comparison of our results with past work in this area and investigate possible explanations for this discrepancy.
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