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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8266
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dc.contributor.authorSaha, Sayan-
dc.contributor.authorLegranda, Louis-
dc.contributor.authorCarrona, Julien-
dc.date.accessioned2024-06-06T09:06:40Z-
dc.date.available2024-06-06T09:06:40Z-
dc.date.issued2024-01-11-
dc.identifier.citationJournal of Cosmology and Astroparticle Physics, 2024, Vol. 2024, Article No. 024en_US
dc.identifier.urihttp://hdl.handle.net/2289/8266-
dc.descriptionRestricted Access.en_US
dc.description.abstractClusters of galaxies, being the largest collapsed structures in the universe, offer valuable insights into the nature of cosmic evolution. Precise calibration of the mass of clusters can be obtained by extracting their gravitational lensing signal on the Cosmic Microwave Background (CMB) fluctuations. We extend and test here the performance achieved on cluster scales by the parameter-free, maximum a posteriori (MAP) CMB lensing reconstruction method, which has been shown to be optimal in the broader context of CMB lensing mass map and power spectrum estimation. In the context of cluster lensing, the lensing signal of other large-scale structures acts as an additional source of noise. We show here that by delensing the CMB fluctuations around each and every cluster, this noise variance is reduced according to expectations. We also demonstrate that the well-known bias in the temperature quadratic estimator in this regime, sourced by the strong non-Gaussianity of the signal, is almost entirely mitigated without any scale cuts. Being statistically speaking an optimal and blind lensing mass map reconstruction, the MAP estimator is a promising tool for the calibration of the masses of clusters.en_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2024JCAP...01..024S/abstracten_US
dc.relation.urihttps://arxiv.org/abs/2307.11711en_US
dc.relation.urihttps://doi.org/10.1088/1475-7516/2024/01/024en_US
dc.rights2024, The Author(s)en_US
dc.subjectgalaxy clustersen_US
dc.subjectgravitational lensingen_US
dc.subjectCMBR polarisationen_US
dc.titleCluster profiles from beyond-the-QE CMB lensing mass mapsen_US
dc.typeArticleen_US
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