Speaker
Description
I will present power spectra of the cosmic microwave background (CMB) anisotropy in temperature and polarization, as measured from the Atacama Cosmology Telescope (ACT) Data Release 6 maps. These maps cover 19,000 square degrees in bands centered at 98, 150, and 220 GHz, with white noise levels three times lower than Planck in polarization, and angular resolution roughly five times higher. I will describe the model developed to fit these data, including detailed treatment of mm-wave foregrounds, and extensive robustness tests of the full analysis pipeline. I will then present constraints on cosmological parameters derived from the ACT DR6 power spectra, as well as from a combination of ACT and legacy data from Planck. ACT and Planck CMB lensing data and baryon acoustic oscillation data from DESI are also used to break geometric degeneracies. Using these data, I will describe the results of several searches for new physics and tests of foundational assumptions of the cosmological model.
| Would you be interested in presenting a poster if the conference is oversubcribed? | No |
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