The bispectrum of reconstructed CMB lensing convergence

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• Aleksandr Bowkis (University of Cambridge)
• Wednesday 26 January 2022, 13:15-13:45
• The Hoyle Lecture Theatre + Zoom .

If you have a question about this talk, please contact Hannah Uebler.

Gravitational lensing of the cosmic microwave background (CMB) is a powerful probe of cosmology, providing valuable information on the gravitational potential of large scale structure. The power spectrum of CMB lensing convergence has been used to help constrain cosmological parameters. The lensing bispectrum is expected to be detectable in forthcoming CMB experiments such as the Simons Observatory and this signal has the potential to significantly improve constraints on cosmological parameters, for example the sum of neutrino masses, the matter density and the amplitude of primordial fluctuations. In this talk I will describe work on understanding the bias terms present in the reconstructed bispectrum of CMB lensing convergence.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• The Hoyle Lecture Theatre + Zoom

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