FPD Theory Seminar

The Magic of Red Galaxies: Tracing Structure Formation With Galaxy Clusters and More

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Location

SLAC, Building 048, Madrone Conf. Room, Room 224

Speaker
Eli Rykoff (KIPAC/SLAC)

Galaxy clusters, as the largest peaks in the cosmic density field, play an important role in astrophysics and cosmology.  As the most dramatic features of large-scale structure, the abundance of clusters provides a key opportunity to test our understanding of structure formation and cosmic expansion history.  In recent years, observational astrophysics has been revolutionized by large surveys, yielding large optical cluster catalogs allowing for precision tracking of the growth of structure.

Katelin Schutz (UC Berkeley)

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Location

SLAC, Madrone (B048-224)

Speaker
Katelin Schutz (UC Berkeley)

Dark matter could be a “thermal-ish" relic of freeze-in, where the dark matter is produced by extremely feeble interactions with Standard Model particles dominantly at low temperatures. In this talk, I will discuss how sub-MeV dark matter can be made through freeze-in, accounting for a dominant new channel where the dark matter gets produced by the decay of plasmons (photons that pick up an in-medium mass in the primordial plasma of our Universe).

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