Speaker
Yvette Perrott
(Victoria University of Wellington)
Description
At temperatures above ~5 keV, the non-relativistic approximation used to derive the classical thermal Sunyaev-Zel'dovich effect spectrum begins to fail. When relativistic effects are included, the spectrum becomes temperature-dependent. This leads to both a problem and an opportunity: a problem, because when the temperature dependence is not accounted for the Compton-y estimate is biased; and an opportunity, because it represents a new way to measure the temperature of the intracluster medium independently of X-ray observations. I will present current results from recalibrating the Planck mass-observable scaling relation to include relativistic effects, and projections for future measurements of cluster temperatures using AtLAST.
Primary author
Yvette Perrott
(Victoria University of Wellington)
