Cosmic Rhythms

Session

CMB I

8 Sept 2026, 10:00

Auditório Ministro João Alberto Lins e Barros (CBPF)

Conveners

CMB I

• Miguel Quartin (Centro Brasileiro de Pesquisas Físicas)
• Martin Makler (CBPF)

91. Towards new CMB lensing measurements with the Atacama Cosmology Telescope and beyond

Blake Sherwin

08/09/2026, 10:00

CMB lensing robustly measures the growth of large-scale structure, providing a powerful test of our cosmological model and of new physics. I will preview the final release of Atacama Cosmology Telescope lensing measurements, which, through several innovations including daytime analysis, will reach state-of-the-art precision and significantly advance determinations of structure growth, neutrino...

92. Euclid and cross-correlations with CMB probes: status and prospects

Giulio Fabbian (Institut d'Astrophysique Spatiale)

08/09/2026, 10:30

In this talk, I will showcase the mission’s progress and dive into the cosmology results from Euclid’s early data (Q1) release, combined with CMB data from Planck, ACT, SPT, and SKA precursors. Then, I will project how DR1 will improve these results in combination with CMB lensing, tSZ, and kSZ measurements using Euclid’s galaxy and QSO/AGN samples as well as cosmic shear. If time allows I...

9. Cosmology from the cross-correlation of DESI DR2 galaxies and CMB lensing

Gerrit Farren (Lawrence Berkeley National Laboratory)

08/09/2026, 11:30

Oral Talk

I will present cosmological results obtained from the cross-correlation of DESI DR2 spectroscopic galaxies with CMB lensing reconstructions from ACT and Planck. This combination of galaxy surveys and CMB lensing provides powerful, percent level constraints on the growth of structure over a wide range of redshifts from $z=0.1$ to $z=2.1$. We further extend the redshift coverage of our analysis...

37. Tomographic Galaxy Cross-Correlations with tSZ and CIB: A Bias-Robust Probe of Baryons and Cosmology

Sara Maleubre (University of Oxford)

08/09/2026, 11:45

Oral Talk

The cross-correlation of galaxies at different redshifts with other tracers of the large-scale structure can be used to reconstruct the cosmic mean of key physical quantities and their evolution over billions of years, at high precision. In particular, cross-correlating redshift-sliced galaxy samples with thermal Sunyaev–Zel’dovich (tSZ) and cosmic infrared background (CIB) maps enables...

49. kSZ velocity reconstruction with ACT DR6 and looking forward to SO

Fiona McCarthy

08/09/2026, 12:00

Oral Talk

The kinetic Sunyaev--Zel'dovich (kSZ) effect is the dominant small-scale CMB blackbody anisotropy, and is sensitive to the electron density field as well as the large scale velocity field of the Universe. It has recently become possible to measure at high significance over a wide sky area with the Atacama Cosmology Telescope (ACT) data, and will be an even more significant signal in Simons...