NMSU Astronomy

Colloquium: Nicolas Battaglia (host: Joe Burchett)

March 12, 2021 @ 3:00 pm – 4:00 pm

Constraining Galaxy Formation and Baryonic Effects on LSS with
Observations of the Thermal and Kinetic Sunyaev-Zeldovich Effects

Nicolas Battaglia, Cornell University

A new window into the growth and evolution of large-scale
structure has opened up with the recent observations of the thermal
and kinetic Sunyaev-Zel’dovich (SZ) effects. I will review recent
observations of the SZ signals and highlight their expected rapid
growth over the next decade with upcoming cosmic microwave background
experiments, like Simons Observatory and CMB-S4. I will present
ongoing work to extract SZ signals in data from the Atacama Cosmology
Telescope and how they can be used to constrain the important baryonic
process that govern galaxy formation. Time permitting, I will conclude
by discussing the connections between these SZ observations and
mitigating the modeling uncertainties associated with “baryonic
effects” in future large-scale structure surveys like LSST.


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