Speaker
Description
One exciting application of forthcoming CMB surveys is the measurement of CMB secondary anisotropies, including the kinetic Sunyaev Zel'dovich (kSZ) effect. By combining measurement of the kSZ effect in the CMB with galaxy survey data, one can reconstruct the large-scale radial velocity field, which contains a wealth of cosmological information. This technique, known as kSZ tomography, has been demonstrated to have excellent detection prospects and a diverse range of applications. In this talk, I will discuss how forthcoming surveys will enable two such applications of kSZ tomography, in particular for probing fundamental physics in both the early and late Universe. First, I will demonstrate how kSZ tomography can tell us about light particles in the primordial Universe by searching for distinct signatures of non-Gaussianity lurking in large scale galaxy bias. I will emphasize some scenarios that give rise to such signatures, and show that the sensitivity is strong enough to outperform some CMB searches. Second, I will discuss the possibility of using kSZ tomography to probe the sum of the neutrino masses. Focusing on kSZ tomography as an independent probe of the growth of large scale structure, I will emphasize how this use-case hinges on some astrophysical uncertainties, which future measurements may circumvent.
| Would you be interested in presenting a poster if the conference is oversubcribed? | No |
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