|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Detectable signature of first stars in 21-cm
If you have a question about this talk, please contact Camille Bonvin.
In this talk I will show that first stars at z~20 leave detectable signature in the redshifted 21-cm line of neutral hydrogen. Two effects previously omitted in similar studies are responsible for a substantial enhancement in the expected signal: the relative motion between the dark matter halos and the in-falling gas, and the negative Lyman-Werner feedback of the starlight on star formation. I will explain how the two effects boost the power spectrum of the 21-cm signal thus making it more likely to be detected.
This talk is part of the Cosmology lunch series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsdavid brailsford Cambridge Immunology Design Anthropology
Other talksA History of Virtualisation in Operating Systems. Unorthodox Interactions at Work Resource Sharing, Organization, and Databases Getting Things Right in a Noisy Milieu: Stochastic Models of Cell Cycle Dynamics in Budding Yeast and Bacteria R&D Management Conference - From Science to Society - Innovation and Value Creation Science Makers: building better microscopes