Cosmology with gravitational lensing of the Cosmic Microwave Background
APA
(2024). Cosmology with gravitational lensing of the Cosmic Microwave Background. ICTP South American Institute for Fundamental Research. https://scivideos.org/index.php/ictp-saifr/4054
MLA
Cosmology with gravitational lensing of the Cosmic Microwave Background. ICTP South American Institute for Fundamental Research, Mar. 13, 2024, https://scivideos.org/index.php/ictp-saifr/4054
BibTex
@misc{ scivideos_SAIFR:4054, doi = {}, url = {https://scivideos.org/index.php/ictp-saifr/4054}, author = {}, keywords = {ICTP-SAIFR, IFT, UNESP}, language = {en}, title = {Cosmology with gravitational lensing of the Cosmic Microwave Background}, publisher = { ICTP South American Institute for Fundamental Research}, year = {2024}, month = {mar}, note = {SAIFR:4054 see, \url{https://scivideos.org/index.php/ictp-saifr/4054}} }
Abstract
The Cosmic Microwave Background (CMB) is the most distant light that we can observe today. Since its emission roughly 380.000 years after the Big Bang it crossed all the Universe while coming to us. During their travel, the photons of the CMB have been deflected by the matter they encountered along their path, an effect called gravitational lensing. This deflection of the CMB is a powerful observable, proportional to the integral of the matter distribution up to the early Universe. I will introduce how we can reconstruct this deflection from observations of the CMB. I will then demonstrate how CMB lensing can put tight constraints on the content of the Universe, on the sum of the neutrino masses, and help us discover cosmic inflation. Lastly, I will introduce a new CMB lensing estimator, which will reconstruct optimally the lensing field for the next generation of CMB surveys.