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Title: Weak lensing of intensity mapping: The cosmic infrared background

Journal Article · · Physical Review. D.
 [1];  [2];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States); Princeton Univ., NJ (United States)
  2. Univ. of California, Berkeley, CA (United States)
  3. Princeton Univ., NJ (United States); Flatiron Inst., New York, NY (United States)

© 2018 American Physical Society. Gravitational lensing deflects the paths of cosmic infrared background (CIB) photons, leaving a measurable imprint on CIB maps. The resulting statistical anisotropy can be used to reconstruct the matter distribution out to the redshifts of CIB sources. To this end, we generalize the cosmic microwave background (CMB) lensing quadratic estimator to any weakly non-Gaussian source field, by deriving the optimal lensing weights. We point out the additional noise and bias caused by the non-Gaussianity and the "self-lensing" of the source field. We propose methods to reduce, subtract, or model these non-Gaussianities. We show that CIB lensing should be detectable with Planck data and detectable at high significance for future CMB experiments like CCAT-Prime. The CIB thus constitutes a new source image for lensing studies, providing constraints on the amplitude of structure at intermediate redshifts between galaxies and the CMB. CIB lensing measurements will also give valuable information on the star-formation history in the Universe, constraining CIB halo models beyond the CIB power spectrum. By laying out a detailed treatment of lens reconstruction from a weakly non-Gaussian source field, this work constitutes a stepping stone toward lens reconstruction from continuum or line intensity mapping data, such as the Lyman-alpha emission, absorption, and the 21 cm radiation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; NSF AST1311756
OSTI ID:
1544264
Alternate ID(s):
OSTI ID: 1457497; OSTI ID: 1771951
Journal Information:
Physical Review. D., Vol. 97, Issue 12; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Testing General Relativity with 21 cm intensity mapping text January 2012
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Planck 2013 results. XXX. Cosmic infrared background measurements and implications for star formation text January 2013
CMB Lensing Power Spectrum Biases from Galaxies and Clusters using High-angular Resolution Temperature Maps text January 2013
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Position-dependent power spectrum of the large-scale structure: a novel method to measure the squeezed-limit bispectrum text January 2014
Joint likelihood function of cluster counts and $n$-point correlation functions: Improving their power through including halo sample variance text January 2014
Gravitational Lensing of Cosmological 21cm Emission text January 2014
Planck 2015 results. I. Overview of products and scientific results text January 2015
Planck 2015 results. XIII. Cosmological parameters text January 2015
Planck 2015 results. XV. Gravitational lensing text January 2015
The foreground wedge and 21 cm BAO surveys text January 2015
A bias to CMB lensing measurements from the bispectrum of large-scale structure text January 2016
Impact of post-Born lensing on the CMB text January 2016
KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing text January 2016
A minimal empirical model for the cosmic far-infrared background anisotropies text January 2016
On the validity of the Born approximation for beyond-Gaussian weak lensing observables text January 2016
CMB weak-lensing beyond the Born approximation: a numerical approach text January 2017
Bias to CMB Lensing Reconstruction from Temperature Anisotropies due to Large-Scale Galaxy Motions text January 2017
Optimizing measurements of cluster velocities and temperatures for CCAT-prime and future surveys text January 2017
Real space lensing reconstruction using cosmic microwave background polarization text January 2017
Reconstruction of lensing from the cosmic microwave background polarization text January 2003
Weak Gravitational Lensing of the CMB text January 2006
Power Spectrum Correlations Induced by Non-Linear Clustering text January 1999

Cited By (10)

Lensing reconstruction from line intensity maps: the impact of gravitational nonlinearity journal July 2018
A nulling strategy for modelling lensing convergence in cones with large deviation theory journal January 2020
Extreme spheres: counts-in-cells for 21cm intensity mapping journal December 2018
Delensing degree-scale B -mode polarization with high-redshift line intensity mapping journal August 2019
Bias to CMB lensing from lensed foregrounds journal December 2019
Measuring dark matter-neutrino relative velocity on cosmological scales journal January 2020
Extreme Spheres: Counts-in-cells for 21cm intensity mapping text January 2018
Delensing Degree-Scale $B$-Mode Polarization with High-Redshift Line Intensity Mapping text January 2019
The relativistic galaxy number counts in the weak field approximation journal September 2020
A User's Guide to Extracting Cosmological Information from Line-Intensity Maps text January 2019

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