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Title: Tensions between direct measurements of the lens power spectrum from Planck data

Abstract

We apply a recently developed method to directly measure the gravitational lensing power spectrum from CMB power spectra to the Planck satellite data. This method allows us to analyze the tension between the temperature power spectrum and lens reconstruction in a model independent way. Even when allowing for arbitrary variations in the lensing power spectrum, the tension remains at the 2.4σ level. By separating the lensing and unlensed high redshift information in the CMB power spectra, we also show that under ΛCDM the two are in tension at a similar level whereas the unlensed information is consistent with lensing reconstruction. These anomalies are driven by the smoother acoustic peaks relative to ΛCDM at ℓ ~1250-1500. Both tensions relax slightly when polarization data are considered. This technique also isolates the one combination of the lensing power spectrum multipoles that the Planck CMB power spectra currently constrain and can be straightforwardly generalized to future data when CMB power spectra constrain multiple aspects of lensing which are themselves correlated with lensing reconstruction

Authors:
 [1];  [1]
  1. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
OSTI Identifier:
1594000
Alternate Identifier(s):
OSTI ID: 1439499
Grant/Contract Number:  
SC0009924; PHY-1125897; FG02-13ER41958
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 10; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Motloch, Pavel, and Hu, Wayne. Tensions between direct measurements of the lens power spectrum from Planck data. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.103536.
Motloch, Pavel, & Hu, Wayne. Tensions between direct measurements of the lens power spectrum from Planck data. United States. doi:10.1103/PhysRevD.97.103536.
Motloch, Pavel, and Hu, Wayne. Mon . "Tensions between direct measurements of the lens power spectrum from Planck data". United States. doi:10.1103/PhysRevD.97.103536. https://www.osti.gov/servlets/purl/1594000.
@article{osti_1594000,
title = {Tensions between direct measurements of the lens power spectrum from Planck data},
author = {Motloch, Pavel and Hu, Wayne},
abstractNote = {We apply a recently developed method to directly measure the gravitational lensing power spectrum from CMB power spectra to the Planck satellite data. This method allows us to analyze the tension between the temperature power spectrum and lens reconstruction in a model independent way. Even when allowing for arbitrary variations in the lensing power spectrum, the tension remains at the 2.4σ level. By separating the lensing and unlensed high redshift information in the CMB power spectra, we also show that under ΛCDM the two are in tension at a similar level whereas the unlensed information is consistent with lensing reconstruction. These anomalies are driven by the smoother acoustic peaks relative to ΛCDM at ℓ ~1250-1500. Both tensions relax slightly when polarization data are considered. This technique also isolates the one combination of the lensing power spectrum multipoles that the Planck CMB power spectra currently constrain and can be straightforwardly generalized to future data when CMB power spectra constrain multiple aspects of lensing which are themselves correlated with lensing reconstruction},
doi = {10.1103/PhysRevD.97.103536},
journal = {Physical Review D},
number = 10,
volume = 97,
place = {United States},
year = {2018},
month = {4}
}

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