Full-sky bispectrum in redshift space for 21cm intensity maps

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dc.contributor.authorKothari, Rahul
dc.contributor.authorDurrer, Ruth
dc.contributor.authorJalilvand, Mona
dc.date.accessioned2021-02-16T08:49:53Z
dc.date.available2021-02-16T08:49:53Z
dc.date.issued2020
dc.description.abstractWe compute the tree-level bispectrum of 21cm intensity mapping after reionisation. We work in directly observable angular and redshift space, focusing on equal-redshift correlations and thin redshift bins, for which the lensing contribution is negligible. We demonstrate the importance of the contributions from redshift-space distortions which typically dominate the result. Taking into account the effects of telescope beams and foreground cleaning, we estimate the signal to noise, and show that the bispectrum is detectable by both SKA in single-dish mode and HIRAX in interferometer mode, especially at the lower redshifts in their respective ranges.en_US
dc.identifier.citationKothari, R. et al. (2020). Full-sky bispectrum in redshift space for 21cm intensity maps. Journal of Cosmology and Astroparticle Physics, 2020(11),en_US
dc.identifier.uri10.1088/1475-7516/2020/12/003
dc.identifier.urihttp://hdl.handle.net/10566/5937
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectGravitational lensingen_US
dc.subjectRedshift surveysen_US
dc.subjectBispectrumen_US
dc.subjectReionizationen_US
dc.subjectCosmologicalen_US
dc.titleFull-sky bispectrum in redshift space for 21cm intensity mapsen_US
dc.typeArticleen_US

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