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10 novembre 2017 Tout le mois

Jens Chluba (Manchester) — Cosmology Beyond Thermal Equilibrium : Future Steps with CMB spectral distortions

Vendredi 10 novembre 2017 11:00-12:00 - Amphi

Since the measurements with COBE/FIRAS in the mid-90’s we know that the energy spectrum of the cosmic microwave background (CMB) is extremely close to that of a perfect blackbody. However, a number of early Universe processes should create spectral distortions at a level within reach of present day technology. I will give a broad-brush overview of recent theoretical and experimental developments, explaining why future measurements of the CMB spectrum will open an unexplored new window to early-universe and particle physics. This provides an exciting new path forward in CMB cosmology which is complementary to planned and ongoing searches for primordial B-mode polarization signals. I will also highlight some of the challenges due to foregrounds.

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