Cosmic Rhythms

Session

CMB II

11 Sept 2026, 09:00

Auditório Ministro João Alberto Lins e Barros (CBPF)

Conveners

CMB II

• Gabriela Marques (CBPF)
• Louis Legrand (Centro Brasileiro de Pesquisas Fisicas)

102. The Simons Observatory

Jo Dunkley (Princeton University)

11/09/2026, 09:00

Oral Talk

The Simons Observatory, a new millimeter-wave observatory in the Atacama, is now gathering data. With its smaller telescopes we are seeking a primordial signal imprinted by gravitational waves generated in the early universe. Its largest telescope will measure the finer scales of the CMB with increased sensitivity, probing the initial conditions of the early universe as well as revealing the...

84. Discoveries from CMB-HD

Neelima Sehgal

11/09/2026, 09:30

Oral Talk

CMB experiments have contributed powerful constraints on the fundamental physics and astrophysics of the Universe. Current CMB experiments, such as the Simons Observatory, are poised to extend this progress even further. However, CMB experiments still have a wealth of information to offer beyond near-term facilities, including probing the properties of dark matter, inflation, and light relic...

104. The FOSSIL mission: towards CMB spectral distortion measurement.

Nabila Aghanim

11/09/2026, 10:00

Oral Talk

The Cosmic Microwave Background (CMB) is a pillar of modern cosmology. Since the results of the COBE/FIRAS satellite in the nineties the CMB spectrum is known to be a quasi-perfect blackbody. However, both standard and non-standard physics processes inevitably lead to deviations from blackbody, named spectral distortions.
FOSSIL, proposed to ESA as its 8th medium-class mission, aims at...

42. Precision Cosmology from the Atacama Cosmology Telescope's New CMB Lensing Maps

Frank Qu (Stanford)

11/09/2026, 11:00

Oral Talk

The gravitational lensing of the Cosmic Microwave Background (CMB) provides a powerful and robust probe of the projected matter distribution across cosmic time, offering unique sensitivity to the growth of large-scale structure, cosmic expansion, and fundamental physics such as the sum of neutrino masses. As cosmology enters a high-precision era, CMB lensing has become a cornerstone observable...

34. Detection of cosmological dipoles aligned with transverse velocities

Yan-Chuan Cai (University of Edinburgh)

11/09/2026, 11:15

Oral Talk

On large scales, peculiar velocities encode a wealth of cosmological information. While line-of-sight components are routinely probed through redshift-space distortions and the kinetic Sunyaev–Zel’dovich effect, measuring transverse velocities has remained challenging. I will present a detection of dipolar patterns on angular scales of tens of degrees imprinted on the Cosmic Microwave...

106. Robust Cosmology at z > 1: Unlocking ELG Cross-Correlations with the CMB and CIB

Tanveer Karim (University of Toronto)

11/09/2026, 11:30

Stage-IV surveys like DESI increasingly rely on z > 1 Emission-Line Galaxies (ELGs) for cross-correlation analyses, capitalizing on their overlap with CMB secondaries such as the CMB lensing and Cosmic Infrared Background (CIB) kernels. However, unlocking their full cosmological potential requires navigating complex observational systematics and non-trivial galaxy-halo connections. In this...

27. Constraining dark sector models with galaxy clustering and the CMB

Francesco Verdiani (SISSA, Trieste), Francesco Verdiani (SISSA, Trieste)

11/09/2026, 11:45

Oral Talk

In several cosmological scenarios, such as massive neutrinos or ultra-light axions, the dark matter comprises a warm component alongside the cold one. This modifies the late-time evolution of the dark sector, thus making galaxy clustering an ideal probe of these models. We study the non-linear evolution of perturbations in this context, and build an EFTofLSS-based model that allows for a...