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Theory Colloquia
The cosmic optical background excess, line-intensity mapping
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Europe/Zurich
Zoom only (CERN)
Zoom only
CERN
Description
Recently, the New Horizons spacecraft was able to detect, for the first time, the cosmic background of optical light. The signal was twice that expected from galaxy number counts. This excess can be explained in terms of two-photon decay of a dark-matter axion, a hypothesis that will be tested with line-intensity mapping very high significance with the impending launch of NASA’s SphereX. I will discuss line-intensity mapping and show how it can be used to probe dark matter, neutrino decays, and other exotic physics.
TH colloquia
Zoom Meeting ID
67346292748
Host
Elena Gianolio
Alternative hosts
Zoom Recording Operations 2, Irene Valenzuela Agui, Benoit Loyer, Clement Montcharmont, Shota Komatsu, Pascal Pignereau, Pier Francesco Monni, John Cassar, AVC support account, Thomas Nik Bazl Fard
Passcode
80279029
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