Séminaire Univers / |
| « Cosmological parameters with the SPT-3G 2019/2020 data » |
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Etienne Camphuis |
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The South Pole Telescope (SPT) is observing the CMB anisotropies with arc-minute resolution using its state-of-the-art camera (SPT-3G). Constraints on cosmological parameters from the obtained data will be as tight as Planck’s one, while remaining independent from the satellite experiment, thus allowing to test the consistency of the two data sets and investigate new physics. In this talk, I will first review the first data release results, and then present the likelihood we are building for the next data release. I will introduce an accurate covariance matrix framework for small survey area and describe how we mitigate the point source contamination with Gaussian constrained realization of the signal. I will finally depict the next steps before obtaining the final parameters. |
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mardi 24 janvier 2023 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |