|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 listsArts, Culture and Education One Day Meeting - 6th Annual Symposium of the Cambridge Computational Biology Institute The Crisis of Democracy? Evidence from the Post-Communist World
Other talks2014 PublicHealth@Cambridge Showcase event The role of EGFR family receptor signaling-induced NF-kB activation in human breast cancer Talking with the neighbours: Understanding spatial accommodation in plant development OxPDE conference, day 1 EEG and MEG analysis The expensive brain: when does natural selection favor increased brain size?