Evidence of lensing of the cosmic microwave background by dark matter halos.
We present evidence of the gravitational lensing of the cosmic microwave background by 10(13) solar mass dark matter halos. Lensing convergence maps from the Atacama Cosmology Telescope Polarimeter (ACTPol) are stacked at the positions of around 12 000 optically selected CMASS galaxies from the SDSS-III/BOSS survey. The mean lensing signal is consistent with simulated dark matter halo profiles and is favored over a null signal at 3.2σ significance. This result demonstrates the potential of microwave background lensing to probe the dark matter distribution in galaxy group and galaxy cluster halos.
Physics and Astronomy Department, Stony Brook University, Stony Brook, New York 11794, USA.
Mathew
M
Madhavacheril
Physics and Astronomy Department, Stony Brook University, Stony Brook, New York 11794, USA.
Neelima
N
Sehgal
Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom.
Rupert
R
Allison
McWilliams Center for Cosmology, Carnegie Mellon University, Department of Physics, 5000 Forbes Ave., Pittsburgh, Pennsylvania 15213, USA.
Nick
N
Battaglia
Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario, Canada M5S 3H8.
J Richard
JR
Bond
Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom.
Erminia
E
Calabrese
Jerod
J
Caligiuri
Department of Physics, University of Michigan, Ann Arbor, Michigan 48103, USA.
Kevin
K
Coughlin
Department of Physics and Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, Maryland 21218-2686, USA.
Devin
D
Crichton
Department of Physics, University of Michigan, Ann Arbor, Michigan 48103, USA.
Rahul
R
Datta
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Mark J
MJ
Devlin
Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom.
Joanna
J
Dunkley
Departamento de Astronomía y Astrofísica, Pontificía Universidad Católica, Casilla 306, Santiago 22, Chile.
Rolando
R
Dünner
Department of Physics and Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, Maryland 21218-2686, USA.
Kevin
K
Fogarty
Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA.
Emily
E
Grace
Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario, Canada M5S 3H8.
Amir
A
Hajian
Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, New Jersey 08544, USA.
Matthew
M
Hasselfield
Department of Astronomy, Pupin Hall, Columbia University, New York, New York 10027, USA.
J Colin
JC
Hill
Astrophysics and Cosmology Research Unit, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban 4041, South Africa.
Matt
M
Hilton
Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4.
Adam D
AD
Hincks
Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, New Jersey 08544, USA.
Renée
R
Hlozek
Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8019, USA.
John P
JP
Hughes
Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
Arthur
A
Kosowsky
Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom.
Thibaut
T
Louis
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Marius
M
Lungu
Department of Physics, University of Michigan, Ann Arbor, Michigan 48103, USA.
Jeff
J
McMahon
Astrophysics and Cosmology Research Unit, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban 4041, South Africa.
Kavilan
K
Moodley
Department of Physics, University of Michigan, Ann Arbor, Michigan 48103, USA.
Charles
C
Munson
Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom.
Sigurd
S
Naess
Dipartimento di Fisica, Università La Sapienza, P. le A. Moro 2, 00185 Roma, Italy.
Federico
F
Nati
Dunlap Institute, University of Toronto, 50 St. George St., Toronto, Ontario, Canada M5S 3H4.
Laura
L
Newburgh
Department of Physics, Cornell University, Ithaca, New York 14853, USA.
Michael D
MD
Niemack
Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA.
Lyman A
LA
Page
Department of Physics and Astronomy, Haverford College, Haverford, Pennsylvania 19041, USA.
Bruce
B
Partridge
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Benjamin
B
Schmitt
Berkeley Center for Cosmological Physics, LBL and Department of Physics, University of California, Berkeley, California 94720, USA.
Blake D
BD
Sherwin
Astrophysics and Cosmology Research Unit, School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4041, South Africa.|National Institute for Theoretical Physics (NITheP), University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
Jon
J
Sievers
Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, New Jersey 08544, USA.
David N
DN
Spergel
Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA.
Suzanne T
ST
Staggs
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.|Department of Physics, West Chester University of Pennsylvania, West Chester, Pennsylvania 19383, USA.
Robert
R
Thornton
Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario, Canada M5S 3H8.
Alexander
A
Van Engelen
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Jonathan T
JT
Ward
NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.
Edward J
EJ
Wollack