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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Detection of the power spectrum of cosmic microwave background lensing by the atacama cosmology telescope
Physical Review Letters, Volume 107, No. 2, Article 021301, Year 2011
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Description
We report the first detection of the gravitational lensing of the cosmic microwave background through a measurement of the four-point correlation function in the temperature maps made by the Atacama Cosmology Telescope. We verify our detection by calculating the levels of potential contaminants and performing a number of null tests. The resulting convergence power spectrum at 2° angular scales measures the amplitude of matter density fluctuations on comoving length scales of around 100Mpc at redshifts around 0.5 to 3. The measured amplitude of the signal agrees with Lambda cold dark matter cosmology predictions. Since the amplitude of the convergence power spectrum scales as the square of the amplitude of the density fluctuations, the 4σ detection of the lensing signal measures the amplitude of density fluctuations to 12%. © 2011 American Physical Society.
Authors & Co-Authors
Das, Sudeep
United States, Berkeley
University of California, Berkeley
United States, Princeton
Princeton University
Sherwin, Blake D.
United States, Princeton
Princeton University
Aguirre, Paula
Chile, Santiago
Pontificia Universidad Católica de Chile
Appel, John William
United States, Princeton
Princeton University
Bond, J. Richard
Canada, Toronto
L’institut Canadien D’astrophysique Théorique
Carvalho, C. Sofia
Portugal, Lisbon
Instituto Superior Técnico
Greece, Athens
Academy of Athens
Devlin, Mark J.
United States, Philadelphia
University of Pennsylvania
Dunkley, Joanna
United States, Princeton
Princeton University
United Kingdom, Oxford
University of Oxford
Dünner, Rolando
Chile, Santiago
Pontificia Universidad Católica de Chile
Essinger-Hileman, Thomas M.
United States, Princeton
Princeton University
Fowler, Joseph W.
United States, Princeton
Princeton University
United States, Gaithersburg
National Institute of Standards and Technology
Hajian, Amir
United States, Princeton
Princeton University
Canada, Toronto
L’institut Canadien D’astrophysique Théorique
Halpern, Mark
Canada, Vancouver
The University of British Columbia
Hasselfield, Matthew F.
Canada, Vancouver
The University of British Columbia
Hincks, Adam D.
United States, Princeton
Princeton University
Hložek, Renée A.
United Kingdom, Oxford
University of Oxford
Huffenberger, Kevin M.
United States, Coral Gables
University of Miami
Hughes, John P.
United States, New Brunswick
Rutgers University–new Brunswick
Irwin, Kent D.
United States, Gaithersburg
National Institute of Standards and Technology
Klein, Jeffrey
United States, Philadelphia
University of Pennsylvania
Kosowsky, Arthur B.
United States, Pittsburgh
University of Pittsburgh
Lupton, Robert H.
United States, Princeton
Princeton University
Marriage, Tobias A.
United States, Princeton
Princeton University
United States, Baltimore
Johns Hopkins University
Marsden, Danica W.
United States, Philadelphia
University of Pennsylvania
Menanteau, Felipe
United States, New Brunswick
Rutgers University–new Brunswick
Moodley, Kavilan
South Africa, Durban
University of Kwazulu-natal
Niemack, Michael D.
United States, Princeton
Princeton University
United States, Gaithersburg
National Institute of Standards and Technology
Nolta, Michael R.
Canada, Toronto
L’institut Canadien D’astrophysique Théorique
Page, Lyman A.
United States, Princeton
Princeton University
Parker, Lucas P.
United States, Princeton
Princeton University
Reese, Erik D.
United States, Philadelphia
University of Pennsylvania
Schmitt, Benjamin L.
United States, Philadelphia
University of Pennsylvania
Sehgal, Neelima
United States, Palo Alto
Stanford University
Sievers, Jonathan L.
Canada, Toronto
L’institut Canadien D’astrophysique Théorique
Spergel, David N.
United States, Princeton
Princeton University
Staggs, Suzanne T.
United States, Princeton
Princeton University
Swetz, Daniel S.
United States, Philadelphia
University of Pennsylvania
United States, Gaithersburg
National Institute of Standards and Technology
Switzer, Eric R.
United States, Princeton
Princeton University
United States, Chicago
The Kavli Institute for Cosmological Physics
Thornton, Robert J.
United States, Philadelphia
University of Pennsylvania
United States, West Chester
West Chester University
Visnjic, Katerina
United States, Princeton
Princeton University
Wollack, Edward J.
United States, Greenbelt
Nasa Goddard Space Flight Center
Statistics
Citations: 211
Authors: 41
Affiliations: 19
Identifiers
Doi:
10.1103/PhysRevLett.107.021301
ISSN:
00319007
e-ISSN:
10797114