Colloque national CMB-France #5

Session

Cross-correlations

5 déc. 2023, 09:00

IAP

29. More than the sum of its parts: joint analysis of LSS and CMB experiments

Stéphane Ilic (IJCLab)

05/12/2023 09:00

Through weak lensing and galaxy clustering measurements, future large-scale galaxy surveys will provide unprecedented constraints on the late Universe. On the other hand, high-quality CMB observations (Planck and future CMB experiments) can -- and already do -- put tight constraints on the early Universe. In this talk, I will show that combining these two sources of cosmological information...

27. Cosmology from weak lensing, galaxy clustering, CMB lensing and tSZ

Karim Benabed

05/12/2023 09:30

28. Cosmology from cross-correlations of unWISE galaxies and ACT DR6 CMB lensing

Gerrit Farren

05/12/2023 09:50

36. Opening-up a new window with projected-field cross-correlations

Boris Bolliet (Cambridge)

05/12/2023 10:20

We present new methods and analyses of hybrid bispectra between large-scale-structure tracers projected on the sphere. Such cross-correlations have been recently measured for kSZ x galaxies (Kusiak et al 2021) and galaxies x CMB lensing (Farren et al 2023) and can be modeled using the halo-model formalism (Bolliet et al 2022). They will allow us to break degeneracies between parameters...

15. Constraining cosmology with Quaia quasars and CMB lensing

Giulio Fabbian (Cardiff University)

05/12/2023 10:40

Quaia is a new full-sky high-redshift quasar catalog containing 1.5 million objects with estimated redshift derived from the Gaia DR3 quasar candidates. I will first present the work that went into the creation of the catalog using unWISE, SDSS data and a machine learning approach, as well as its decontamination from stars and dust extinction. I will then present the recent cosmological...