SZastro

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Background discussion

//Nick writing of behalk of Simone, Emmanuel, and David//

We forecasted S/N and constraints on feedback and non-thermal pressure support for samples of LRGs and QSOs using combined tSZ and kSZ observations and a DESI-like spectroscopic. Here we use the the numbers density of objects quoted in | Table 3 of the DESI white paper.

++ LRGs

image SN_LRG.png width="500px" image Pars_LRG.png width="500px"

Epsilon is the feedback efficiency, and alpha is the normalization of the non-thermal pressure support. Also, Blue = 4m, Green = 5m, Red = 6m.

++ QSOs

image SN_QSO.png width="500px" image Pars_QSO.png width="500px"

To Do: Looking into well motivated science requirements for the S4-CDT, which will also guide our SO design. One idea is to couple these constraints to the baryonic effects on p(k), this is k dependent but we should be able to decide on a k range and accuracy to which we need to constrain feedback etc. Any other ideas would be very helpful.