text: 144,35,1443022428951785475,61623544,Dr./Prof. Renée Hložek,"New paper alert! In this work led by awesome student Gerrit Farren we estimate the kSZ signature of ultra light axions. <LINK> If you care about dark matter, you know the name of the game is distinguishing axions from dark matter - so we either want to detect it or we want to rule out a universe that contains a lot of axions! This plot shows how our limits will keep getting tighter #darkmatter <LINK> Future experiments like @SimonsObs, CMBS4 and @desisurvey will be pivotal for these constraints It’s a great time to be a cosmologist!",https://arxiv.org/abs/2109.13268,"Measurements of secondary cosmic microwave background (CMB) anisotropies, such as the Sunyaev-Zel'dovich (SZ) effect, will enable new tests of neutrino and dark sector properties. The kinetic SZ (kSZ) effect is produced by cosmological flows, probing structure growth. Ultra-light axions (ULAs) are a well-motivated dark-matter candidate. Here the impact of ULA dark matter (with mass $10^{-27}~{\rm eV}$ to $10^{-23}~{\rm eV}$) on kSZ observables is determined, applying new analytic expressions for pairwise cluster velocities and Ostriker-Vishniac signatures in structure-suppressing models. For the future CMB-S4 and ongoing DESI galaxy surveys, the kSZ effect (along with primary anisotropies) will probe ULA fractions $\eta_a = \Omega_{\rm{axion}}/\Omega_{\rm DM}$ as low as $\sim 5\%$ if $m_{a}\simeq 10^{-27}~{\rm eV}$ (at 95\% C.L.), with sensitivity extending up to $m_{a}\simeq 10^{-25}~{\rm eV}$. If reionization and the primary CMB can be adequately modeled, Ostriker-Vishniac measurements could probe values $\eta_{a}\simeq 10^{-3}$ if $10^{-27}~{\rm eV}\lesssim m_{a}\lesssim 10^{-24}~{\rm eV}$, or $\eta_{a}\simeq 1$ if $m_{a}\simeq 10^{-22}~{\rm eV}$, within the fuzzy dark matter window. ",Ultra-light axions and the kinetic Sunyaev-Zel'dovich Effect,4,"['New paper alert! In this work led by awesome student Gerrit Farren we estimate the kSZ signature of ultra light axions. <LINK>', 'If you care about dark matter, you know the name of the game is distinguishing axions from dark matter - so we either want to detect it or we want to rule out a universe that contains a lot of axions! This plot shows how our limits will keep getting tighter #darkmatter https://t.co/vUlB1jrANB', 'Future experiments like @SimonsObs, CMBS4 and  @desisurvey will be pivotal for these constraints', 'It’s a great time to be a cosmologist!']",21,09,538