Cosmic Rhythms

Session

CMB I

8 Sept 2026, 09:30

Auditório Ministro João Alberto Lins e Barros (CBPF)

91. Blake Sherwin: ACT lensing DR6 plus

Blake Sherwin

08/09/2026, 09:30

92. Giulio Fabbian: Cross-correlations CMB x Euclid

Giulio Fabbian (Institut d'Astrophysique Spatiale)

08/09/2026, 10:00

30. Probing High-Redshift Structure Growth with CMB Lensing–Quasar Cross-Correlations

Carmen Embil Villagra (University of Cambridge)

08/09/2026, 11:00

Oral Talk

Recent and upcoming CMB experiments are opening a new window onto the late-time Universe by reaching arcminute-scale resolution. These improvements allow us to extract information from CMB secondary anisotropies, which probe the evolution and distribution of structure over most of cosmic history. I will present new constraints on the amplitude of matter fluctuations over a broad redshift...

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

Gerrit Farren (Lawrence Berkeley National Laboratory)

08/09/2026, 11:15

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, 11:30

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, 11:45

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...