Planck integrated Sachs-Wolfe-lensing likelihood and the CMB temperature

Carron, Julien, Lewis, Antony and Fabbian, Giulio ORCID: https://orcid.org/0000-0002-3255-4695 2022. Planck integrated Sachs-Wolfe-lensing likelihood and the CMB temperature. PHYSICAL REVIEW D 10.1103/PhysRevD.106.103507

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Abstract

We present a new Planck CMB lensing-CMB temperature cross-correlation likelihood that can be used to constrain cosmology via the integrated Sachs-Wolfe (ISW) effect. CMB lensing is an excellent tracer of ISW, and we use the latest PR4 Planck data maps and lensing reconstruction to produce the first public Planck likelihood to constrain this signal. We demonstrate the likelihood by constraining the CMB background temperature from Planck data alone, where the ISW-lensing cross-correlation is a powerful way to break the geometric degeneracy, substantially improving constraints from the CMB and lensing power spectra alone.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Date of First Compliant Deposit:	20 January 2023
Date of Acceptance:	7 October 2022
Last Modified:	03 May 2023 08:38
URI:	https://orca.cardiff.ac.uk/id/eprint/156012

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