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Supporting collaborative creativity with educational visualizations in 3D virtual worlds

2012 International Workshops on Web-Based Learning, ICWL 2012 - KMEL, SciLearn, and CCSTED

作者： Fominykh, Mikhail Divitini, Monica Prasolova-Førland, Ekaterina Program for Learning with ICT Norwegian University of Science and Technology Norway Department of Computer and Information Science Norwegian University of Science and Technology Norway

ISBN: (纸本)9783662434536

Social media are known for substantial creativity support, as they allow users exploring, creating, and sharing various types of content. Social 3D virtual worlds, such as Second Life, can also be seen as a social media that have wide possibilities for being creative. In this paper, we explore how 3D virtual worlds can support creativity in educational settings, including creativity of the collaborative process and creativity of the outcome projects. We propose that this technology can support both. In order to test this proposal, we used the data collected in a case study that we conducted within Cooperation technology course at the Norwegian University of science and technology in 2011. The study was supported by the EU research project CoCreat. The data are discussed to present the challenges for supporting collaborative creativity with 3D virtual worlds, approaches to understanding the concept of creativity, and our experience in creativity evaluation. © 2014 Springer-Verlag.

关键词： Social networking (online)

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Constraints on cosmological parameters from the 500 deg2SPTpol lensing power spectrum

arXiv

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arXiv 2019年

作者： Bianchini, F. Wu, W.L.K. Ade, P.A.R. Anderson, A.J. Austermann, J.E. Avva, J.S. Beall, J.A. Bender, A.N. Benson, B.A. Bleem, L.E. Carlstrom, J.E. Chang, C.L. Chaubal, P. Chiang, H.C. Citron, R. Moran, C. Corbett Crawford, T.M. Crites, A.T. De Haan, T. Dobbs, M.A. Everett, W. Gallicchio, J. George, E.M. Gilbert, A. Gupta, N. Halverson, N.W. Harrington, N. Henning, J.W. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hrubes, J.D. Huang, N. Hubmayr, J. Irwin, K.D. Knox, L. Lee, A.T. Li, D. Lowitz, A. Manzotti, A. McMahon, J.J. Meyer, S.S. Millea, M. Mocanu, L.M. Montgomery, J. Nadolski, A. Natoli, T. Nibarger, J.P. Noble, G. Novosad, V. Omori, Y. Padin, S. Patil, S. Pryke, C. Reichardt, C.L. Ruhl, J.E. Saliwanchik, B.R. Sayre, J.T. Schaffer, K.K. Sievers, C. Simard, G. Smecher, G. Stark, A.A. Story, K.T. Tucker, C. Vanderlinde, K. Veach, T. Vieira, J.D. Wang, G. Whitehorn, N. Yefremenko, V. School of Physics University of Melbourne ParkvilleVIC3010 Australia Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Cardiff University CardiffCF10 3XQ United Kingdom Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States Department of Physics University of Colorado BoulderCO80309 United States Department of Physics University of California BerkeleyCA94720 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Durban South Africa University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States TAPIR Walter Burke Institute for Theoretical Physics California Institute of Technology 1200 E California Blvd PasadenaCA91125 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States Physics Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Canadian Institute for Advanced Research CIFAR Program in Gravity and the Extreme Universe TorontoONM5G 1Z8 Canada Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States Harvey Mudd College 301 Platt Blvd. ClaremontCA91711 United States European Southern Observatory Karl-Schwarzschild-Str. 2 Garching bei München85748 Germany As

We present cosmological constraints based on the cosmic microwave background (CMB) lensing potential power spectrum measurement from the recent 500 deg2SPTpol survey, the most precise CMB lensing measurement from the ground to date. We fit a flat ΛCDM model to the reconstructed lensing power spectrum alone and in addition with other data sets: baryon acoustic oscillations (BAO) as well as primary CMB spectra from Planck and SPTpol. The cosmological constraints based on SPTpol and Planck lensing band powers are in good agreement when analysed alone and in combination with Planck full-sky primary CMB data. Within the ΛCDM model, CMB lensing data are primarily sensitive to the amount of large-scale structure as parametrized by σ8Ω0.25m. With weak priors on the baryon density and other parameters, the SPTpol CMB lensing data alone provide a 4% constraint on σ8Ω0.25m= 0.593 ± 0.025. Jointly fitting with BAO data, we find σ8= 0.779 ± 0.023, Ωm= 0.368+0.032-0.037, and H0= 72.0+2.1-2.5km s-1Mpc-1, up to 2 s away from the central values preferred by Planck lensing + BAO. However, we recover good agreement between SPTpol and Planck when restricting the analysis to similar scales. We also consider single-parameter extensions to the flat ΛCDM model. In combination with Planck primary CMB measurements and BAO, the SPTpol lensing spectrum constrains the spatial curvature to be ΩK= -0.0007 ± 0.0025 and the sum of the neutrino masses to be Σmν Copyright © 2019, The Authors. All rights reserved.

关键词： Cosmology

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A measurement of the cosmic microwave background lensing potential and power spectrum from 500 deg2of sptpol temperature and polarization data

arXiv

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arXiv 2019年

作者： Wu, W.L.K. Mocanu, L.M. Ade, P.A.R. Anderson, A.J. Austermann, J.E. Avva, J.S. Beall, J.A. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Carlstrom, J.E. Chang, C.L. Chiang, H.C. Citron, R. Moran, C. Corbett Crawford, T.M. Crites, A.T. De Haan, T. Dobbs, M.A. Everett, W. Gallicchio, J. George, E.M. Gilbert, A. Gupta, N. Halverson, N.W. Harrington, N. Henning, J.W. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hou, Z. Hrubes, J.D. Huang, N. Hubmayr, J. Irwin, K.D. Knox, L. Lee, A.T. Li, D. Lowitz, A. Manzotti, A. McMahon, J.J. Meyer, S.S. Millea, M. Montgomery, J. Nadolski, A. Natoli, T. Nibarger, J.P. Noble, G.I. Novosad, V. Omori, Y. Padin, S. Patil, S. Pryke, C. Reichardt, C.L. Ruhl, J.E. Saliwanchik, B.R. Sayre, J.T. Schaffer, K.K. Sievers, C. Simard, G. Smecher, G. Stark, A.A. Story, K.T. Tucker, C. Vanderlinde, K. Veach, T. Vieira, J.D. Wang, G. Whitehorn, N. Yefremenko, V. Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Institute of Theoretical Astrophysics University of Oslo P.O.Box 1029 Blindern OsloN-0315 Norway Cardiff University CardiffCF10 3XQ United Kingdom Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States Department of Physics University of California BerkeleyCA94720 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Durban South Africa TAPIR Walter Burke Institute for Theoretical Physics California Institute of Technology 1200 E California Blvd PasadenaCA91125 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States Physics Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Canadian Institute for Advanced Research CIFAR Program in Cosmology and Gravity TorontoONM5G 1Z8 Canada Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States Harvey Mudd College 301 Platt Blvd. ClaremontCA91711 United States European Southern Observatory Karl-Schwarzschild-Str. 2 Garching bei München85748 Germany Department of Physics University of Colorado BoulderCO80309 Unite

We present a measurement of the cosmic microwave background (CMB) lensing potential using 500 deg2of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode greater than unity at lensing multipoles L 250, using a quadratic estimator on a combination of CMB temperature and polarization maps. We report measurements of the lensing potential power spectrum in the multipole range of 100 MV= 0.944±0.058 (Stat.)±0.025 (Sys.);restricting to only polarization data, we find APOL= 0.906 ± 0.090 (Stat.) ± 0.040 (Sys.). Considering statistical uncertainties alone, this is the most precise polarization-only lensing amplitude constraint to date (10.1 σ), and is more precise than our temperature-only constraint. We perform null tests and consistency checks and find no evidence for significant contamination. Copyright © 2019, The Authors. All rights reserved.

关键词： Cosmology

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Measurements of B-mode polarization of the cosmic microwave background from 500 square degrees of SPTpol data

arXiv

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arXiv 2019年

作者： Sayre, J.T. Reichardt, Christian L. Henning, J.W. Ade, P.A.R. Anderson, A.J. Austermann, J.E. Avva, J.S. Beall, J.A. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Carlstrom, J.E. Chang, C.L. Chiang, H.C. Citron, R. Moran, C. Corbett Crawford, T.M. Crites, A.T. de Haan, T. Dobbs, M.A. Everett, W. Gallicchio, J. George, E.M. Gilbert, A. Gupta, N. Halverson, N.W. Harrington, N. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hrubes, J.D. Huang, N. Hubmayr, J. Irwin, K.D. Knox, L. Lee, A.T. Li, D. Lowitz, A. McMahon, J.J. Meyer, S.S. Mocanu, L.M. Montgomery, J. Nadolski, A. Natoli, T. Nibarger, J.P. Noble, G. Novosad, V. Padin, S. Patil, S. Pryke, C. Ruhl, J.E. Saliwanchik, B.R. Schaffer, K.K. Sievers, C. Smecher, G. Stark, A.A. Tucker, C. Vanderlinde, K. Veach, T. Vieira, J.D. Wang, G. Whitehorn, N. Wu, W.L.K. Yefremenko, V. Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States Department of Physics University of Colorado BoulderCO80309 United States Physics Department Center for Education and Research in Cosmology and Astrophysics Case Western Reserve University ClevelandOH44106 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Cardiff University CardiffCF10 3XQ United Kingdom Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States Department of Physics University of California BerkeleyCA94720 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Durban South Africa University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States TAPIR Walter Burke Institute for Theoretical Physics California Institute of Technology 1200 E California Blvd PasadenaCA91125 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States Physics Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Canadian Institute for Advanced Research CIFAR Program in Gravity and the Extreme Universe TorontoONM5G 1Z8 Canada Harvey Mudd Col

We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using the SPTpol instrument on the South Pole Telescope. This work uses 500 deg2 of SPTpol data, a five-fold increase over the last SPTpol B-mode release. As a result, the bandpower uncertainties have been reduced by more than a factor of two, and the measurement extends to lower multipoles: 52 −71, corresponding to a 18.1 σ detection of power. An upper limit is set on the tensor-to-scalar ratio, r lens, the data prefer Alens = 1.17 ± 0.13. These data are currently the most precise measurements of B-mode power at > 320. Copyright © 2019, The Authors. All rights reserved.

关键词： Cosmology

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Multi-layered covert QR codes for increased capacity and security

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International Journal of computers and Applications 2015年第1期37卷 17-27页

作者： Meruga, Jeevan M. Fountain, Carly Kellar, Jon Crawford, Grant Baride, Aravind May, P. Stanley Cross, William Hoover, Randy Materials Engineering and Science Program South Dakota School of Mines and Technology 515 E. St. Joseph St Rapid CitySD57701 United States Department of Mathematics and Computer Science South Dakota School of Mines and Technology University of South Dakota United States Department of Electrical and Computer Engineering South Dakota School of Mines and Technology University of South Dakota United States Department of Chemistry University of South Dakota United States

Quick Response (QR) codes, used in marketing, warehouse management, product tracking, and other applications, are usually only comprised of visible black and white modules. The goal of this research is the creation of covert, color QR codes for increased data capacity, and security. This goal was met by layering QR codes, each of a unique color, printing the covert versions of the color QR codes, upconverting the covert codes into visible codes and unlayering them to take advantage of the various color channels present. It was shown that color layering of the QR codes effectively increased the data capacity by three times that of a traditional QR code, while the covert nature of the code provides added security. Finally, it was also demonstrated that a layered QR code with six base colors (using color intensity variations) could further increase QR code data capacity. © 2015 Taylor and Francis.

关键词： Color

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Nat Genet:单细胞分析解开结直肠癌细胞的神秘面纱

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现代生物医学进展 2017年第15期17卷 I0003-I0003页

作者： Huipeng Li, Elise T Courtois, Debarka Sengupta, Yuliana Tan Shyam Prabhakar Elise T Courtois, Yuliana Tan Paul Robson Debarka Sengupta Kok Hao Chen, Jolene Jie Lin Goh Paul Jongjoon Choi Say Li Kong, Axel M Hillmer Iain Beehuat Tan Clarinda Chua Iain Beehuat Tan Lim Kiat Hon Wah Siew Tan Mark Wong Lawrence J K Wee Iain Beehuat Tan Paul Robson Paul Robson Paul Robson Computational and Systems Biology Genome Institute of Singapore Singapore Developmental Cellomics Laboratory Genome Institute of Singapore Singapore Department of Computer Science and Engineering and Center for Computational Biology Indraprastha Institute of Information Technology Delhi India Synthetic Biology Genome Institute of Singapore Singapore Cancer Therapeutics and Stratified Oncology Genome Institute of Singapore Singapore Department of Medical Oncology National Cancer Centre Singapore Singapore Department of Pathology Singapore General Hospital Singapore Department of Colorectal Surgery Singapore General Hospital Singapore Data Analytics Department Institute for Infocomm Research Singapore Program in Cancer and Stem Cell Biology Duke-NUS Medical School Singapore The Jackson Laboratory for Genomic Medicine Farmington Connecticut USA Department of Genetics and Genome Sciences Institute for Systems Genomics University of Connecticut Farmington Connecticut USA Department of Biological Sciences National University of Singapore Singapore.

结合单细胞基因组学和计算机技术，一个研究团队（包括来自杰克逊实验室（JAx）单细胞生物学主任Paul Robson博士在内）鉴定出了11种结直肠癌肿瘤的癌细胞组成及邻近的非癌细胞。这对于更好的肿瘤靶向诊断和治疗很重要。”使用单细胞测... 详细信息

结合单细胞基因组学和计算机技术，一个研究团队（包括来自杰克逊实验室（JAx）单细胞生物学主任Paul Robson博士在内）鉴定出了11种结直肠癌肿瘤的癌细胞组成及邻近的非癌细胞。这对于更好的肿瘤靶向诊断和治疗很重要。”使用单细胞测序。”JAX科学家、这篇发表在Nature Genetics上的文章共同第一作者Elise Courtois说道。”我们可以根据肿瘤中的细胞组成将结直肠癌进一步分类。因为每种亚型的肿瘤病人生存率存在差别，我们的方法将为肿瘤医生提供更多的关于肿瘤预后和治疗的信息。”

关键词：单细胞分析结直肠癌癌细胞 Nat 细胞组成肿瘤病计算机技术细胞生物学

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Inter Subject Correlation of Brain Activity during Visuo-Motor Sequence learning

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8834卷 35-41页

作者： Miyapuram, Krishna Prasad Pamnani, Ujjval Doya, Kenji Bapi, Raju S. Cognitive Science Program Indian Institute of Technology Gandhinagar India Neural Computation Unit Okinawa Institute of Science and Technology Okinawa Japan Center for Neural & Cognitive Sciences Department of Computer and Information Sciences University of Hyderabad India

Brain imaging using functional MRI allows us to understand brain function while participants are engaged in meaningful tasks. Traditionally the experimental paradigms have been limited to repeated presentation of stimuli to participants followed by a model-based analysis of the data. The Inter Subject Correlation (ISC) analysis allows a model-free analysis while participants are presented with naturalistic stimuli such as watching a movie. We extend the ISC approach to a learning paradigm in which participants are repeatedly performing a motor sequence in response to visual stimuli. We qualitatively compare the correlation results across learning sessions. The preliminary result we observe is shift of correlation activity in cerebellum across sessions. A modelbased analysis identifying task related activity compared to baseline is also reported. © Springer International Publishing Switzerland 2014.

关键词： Magnetic resonance imaging

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False alarm reduction in continuous cardiac monitoring using 3D Accélération signals

False alarm reduction in continuous cardiac monitoring using...

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International computer science and Engineering Conference, ICSEC 2014

作者： Tanantong, Tanatorn Nantajeewarawat, Ekawrt Thiemjarus, Surapa Computer Science Program Sirindhorn International Institute of Technology Thammasat University Pathumthani Thailand National Electronics and Computer Technology Center Pathumthani Thailand

ISBN: (纸本)9781479949632

In continuous cardiac monitoring through wireless Body Sensor Networks (BSNs) using ECG signals, signal quality can be deteriorated due to several factors, including, noise, low battery power and network transmission problems. Body movements occurring when a subject performs activities of daily living (ADLs) are also major causes of high false alarm rates. This paper presents a hybrid framework for false alarm reduction in continuous cardiac monitoring, where classification models constructed using machine learning algorithms are used for labeling input signals and a rule-based expert system is used for combining the classification results into make a final decision. From their extracted low-level features, ECG signal portions are labeled with heartbeat types and also signal quality levels. Meanwhile, low-level features from 3D acceleration signals are used for predicting types of activities. Taking signal quality levels and activity types into considerations, the rule-based expert system then determines whether abnormal ECG portions should trigger alarms or should be ignored. The proposed framework is validated using two datasets: one is obtained from the MIT-BIH arrhythmia database and the other is acquired from 10 subjects while they are performing ADLs. The results of the experiments demonstrate that our proposed framework can reduce false alarm rates in continuous cardiac monitoring and potentially assist physicians in diagnosing a vast amount of data acquired from wireless sensors. © 2014 IEEE.

关键词： Errors

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Dark Energy Survey Year 1 Results: Tomographic cross-correlations between Dark Energy Survey galaxies and CMB lensing from South Pole Telescope+Planck

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Physical Review D 2019年第4期100卷 043501-043501页

作者： Y. Omori T. Giannantonio A. Porredon E. J. Baxter C. Chang M. Crocce P. Fosalba A. Alarcon N. Banik J. Blazek L. E. Bleem S. L. Bridle R. Cawthon A. Choi R. Chown T. Crawford S. Dodelson A. Drlica-Wagner T. F. Eifler J. Elvin-Poole O. Friedrich D. Gruen G. P. Holder D. Huterer B. Jain M. Jarvis D. Kirk N. Kokron E. Krause N. MacCrann J. Muir J. Prat C. L. Reichardt A. J. Ross E. Rozo E. S. Rykoff C. Sánchez L. F. Secco G. Simard R. H. Wechsler J. Zuntz T. M. C. Abbott F. B. Abdalla S. Allam S. Avila K. Aylor B. A. Benson G. M. Bernstein E. Bertin F. Bianchini D. Brooks E. Buckley-Geer D. L. Burke J. E. Carlstrom A. Carnero Rosell M. Carrasco Kind J. Carretero F. J. Castander C. L. Chang H-M. Cho A. T. Crites C. E. Cunha L. N. da Costa T. de Haan C. Davis J. De Vicente S. Desai H. T. Diehl J. P. Dietrich M. A. Dobbs W. B. Everett P. Doel J. Estrada B. Flaugher J. Frieman J. García-Bellido E. Gaztanaga D. W. Gerdes E. M. George R. A. Gruendl J. Gschwend G. Gutierrez N. W. Halverson N. L. Harrington W. G. Hartley D. L. Hollowood W. L. Holzapfel K. Honscheid Z. Hou B. Hoyle J. D. Hrubes D. J. James T. Jeltema K. Kuehn N. Kuropatkin A. T. Lee E. M. Leitch M. Lima D. Luong-Van A. Manzotti D. P. Marrone J. L. Marshall J. J. McMahon P. Melchior F. Menanteau S. S. Meyer C. J. Miller R. Miquel L. M. Mocanu J. J. Mohr T. Natoli S. Padin A. A. Plazas C. Pryke A. K. Romer A. Roodman J. E. Ruhl E. Sanchez V. Scarpine K. K. Schaffer M. Schubnell S. Serrano I. Sevilla-Noarbe E. Shirokoff M. Smith M. Soares-Santos F. Sobreira Z. Staniszewski A. A. Stark K. T. Story E. Suchyta M. E. C. Swanson G. Tarle D. Thomas M. A. Troxel K. Vanderlinde J. D. Vieira A. R. Walker W. L. K. Wu O. Zahn Department of Physics Stanford University 382 Via Pueblo Mall Stanford California 94305 USA Kavli Institute for Particle Astrophysics and Cosmology P.O. Box 2450 Stanford University Stanford California 94305 USA Department of Physics and McGill Space Institute McGill University Montreal Quebec H3A 2T8 Canada Institute of Astronomy University of Cambridge Madingley Road Cambridge CB3 0HA United Kingdom Kavli Institute for Cosmology University of Cambridge Madingley Road Cambridge CB3 0HA United Kingdom Universitäts-Sternwarte Fakultät für Physik Ludwig-Maximilians Universität München Scheinerstrasse 1 81679 München Germany Institut d’Estudis Espacials de Catalunya (IEEC) 08193 Barcelona Spain Institute of Space Sciences (ICE CSIC) Campus UAB Carrer de Can Magrans s/n 08193 Barcelona Spain Department of Physics and Astronomy University of Pennsylvania Philadelphia Pennsylvania 19104 USA Kavli Institute for Cosmological Physics University of Chicago Chicago Illinois 60637 USA Fermi National Accelerator Laboratory P.O. Box 500 Batavia Illinois 60510 USA Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Institute of Physics Laboratory of Astrophysics École Polytechnique Fédérale de Lausanne (EPFL) Observatoire de Sauverny 1290 Versoix Switzerland High Energy Physics Division Argonne National Laboratory Argonne Illinois 60439 USA Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester Oxford Road Manchester M13 9PL United Kingdom Department of Physics and Astronomy McMaster University 1280 Main Street West Hamilton Ontario L8S 4L8 Canada Department of Astronomy and Astrophysics University of Chicago Chicago Illinois 60637 USA Department of Physics Carnegie Mellon University Pittsburgh Pennsylvania 15312 USA Department of Astronomy/Steward Observatory 933 North Cherry Avenue Tucson Arizona 85721-0065 USA Jet Propulsion Laboratory California Institute of

We measure the cross-correlation between redMaGiC galaxies selected from the Dark Energy Survey (DES) year 1 data and gravitational lensing of the cosmic microwave background (CMB) reconstructed from South Pole Telescope (SPT) and Planck data over 1289 deg2. When combining measurements across multiple galaxy redshift bins spanning the redshift range of 0.15

关键词： Cosmic microwave background Cosmological parameters Large scale structure of the Universe

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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

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Physical Review D 2019年第4期100卷 043517-043517页

作者： Y. Omori E. J. Baxter C. Chang D. Kirk A. Alarcon G. M. Bernstein L. E. Bleem R. Cawthon A. Choi R. Chown T. M. Crawford C. Davis J. De Vicente J. DeRose S. Dodelson T. F. Eifler P. Fosalba O. Friedrich M. Gatti E. Gaztanaga T. Giannantonio D. Gruen W. G. Hartley G. P. Holder B. Hoyle D. Huterer B. Jain M. Jarvis E. Krause N. MacCrann R. Miquel J. Prat M. M. Rau C. L. Reichardt E. Rozo S. Samuroff C. Sánchez L. F. Secco E. Sheldon G. Simard M. A. Troxel P. Vielzeuf R. H. Wechsler J. Zuntz T. M. C. Abbott F. B. Abdalla S. Allam J. Annis S. Avila K. Aylor B. A. Benson E. Bertin S. L. Bridle D. Brooks D. L. Burke J. E. Carlstrom A. Carnero Rosell M. Carrasco Kind J. Carretero F. J. Castander C. L. Chang H-M. Cho A. T. Crites M. Crocce C. E. Cunha L. N. da Costa T. de Haan S. Desai H. T. Diehl J. P. Dietrich M. A. Dobbs W. B. Everett E. Fernandez B. Flaugher J. Frieman J. García-Bellido E. M. George R. A. Gruendl G. Gutierrez N. W. Halverson N. L. Harrington D. L. Hollowood K. Honscheid W. L. Holzapfel Z. Hou J. D. Hrubes D. J. James T. Jeltema K. Kuehn N. Kuropatkin M. Lima H. Lin A. T. Lee E. M. Leitch D. Luong-Van M. A. G. Maia A. Manzotti D. P. Marrone J. L. Marshall P. Martini J. J. McMahon P. Melchior F. Menanteau S. S. Meyer L. M. Mocanu J. J. Mohr T. Natoli R. L. C. Ogando S. Padin A. A. Plazas C. Pryke A. K. Romer A. Roodman J. E. Ruhl E. S. Rykoff E. Sanchez V. Scarpine K. K. Schaffer R. Schindler I. Sevilla-Noarbe E. Shirokoff M. Smith R. C. Smith M. Soares-Santos F. Sobreira Z. Staniszewski A. A. Stark K. T. Story E. Suchyta M. E. C. Swanson G. Tarle D. Thomas K. Vanderlinde J. D. Vieira V. Vikram A. R. Walker J. Weller R. Williamson W. L. K. Wu O. Zahn Kavli Institute for Particle Astrophysics & Cosmology P. O. Box 2450 Stanford University Stanford California 94305 USA Department of Physics Stanford University 382 Via Pueblo Mall Stanford California 94305 USA Department of Physics and McGill Space Institute McGill University Montreal Quebec H3A 2T8 Canada Department of Physics and Astronomy University of Pennsylvania Philadelphia Pennsylvania 19104 USA Kavli Institute for Cosmological Physics University of Chicago Chicago Illinois 60637 USA Department of Physics & Astronomy University College London Gower Street London WC1E 6BT United Kingdom Institut d’Estudis Espacials de Catalunya (IEEC) 08193 Barcelona Spain Institute of Space Sciences (ICE CSIC) Campus UAB Carrer de Can Magrans s/n 08193 Barcelona Spain High Energy Physics Division Argonne National Laboratory Argonne Illinois 60439 USA Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Department of Physics and Astronomy McMaster University 1280 Main St. W. Hamilton Ontario L8S 4L8 Canada Department of Astronomy and Astrophysics University of Chicago Chicago Illinois 60637 USA Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT) Madrid Spain Department of Physics Carnegie Mellon University Pittsburgh Pennsylvania 15312 USA Department of Astronomy/Steward Observatory 933 North Cherry Avenue Tucson Arizona 85721-0065 USA Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. Pasadena California 91109 USA Max Planck Institute for Extraterrestrial Physics Giessenbachstrasse 85748 Garching Germany Universitäts-Sternwarte Fakultät für Physik Ludwig-Maximilians Universität München Scheinerstrasse 1 81679 München Germany Institut de Física d’Altes Energies (IFAE) The Barcelona Institute of Science and Technology Campus UAB 08193 Bellaterra (Barcelona) Spain Institute of Astronomy University of Cambridge Madingley Road Cambridge CB3 0HA

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=0.261−0.051+0.070 and S8≡σ8Ωm/0.3=0.660−0.100+0.085. 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.

关键词： Cosmic microwave background Large scale structure of the Universe

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