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Weak lensing corrections to tSZ-lensing cross correlation

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Original languageEnglish
Article number008
Number of pages20
JournalJournal of Cosmology and Astroparticle Physics
Volume2014
Issue number11
DOIs
Publication statusPublished - 7 Nov 2014

Abstract

The cross correlation between the thermal Sunyaev-Zeldovich (tSZ) effect and gravitational lensing in wide field has recently been measured. It can be used to probe the distribution of the diffuse gas in large scale structure, as well as inform us about the missing baryons. As for any lensing-based quantity, higher order lensing effects can potentially affect the signal. Here, we extend previous higher order lensing calculations to the case of tSZ-lensing cross correlations. We derive terms analogous to corrections due to the Born approximation, lens-lens coupling, and reduced shear up to order ℓ ≳; 3000.

    Research areas

  • gravitational lensing, power spectrum, Sunyaev-Zeldovich effect

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