Add gas properties to galaxy clusters / haloes

[bnord]

Description

We'll create a list of cluster gas properties -- intrinsic and observable --- based on halo properties.

Inputs

• halo properties (mass, redshift, shape)
• multi-wavelength and intra-wavelength correlation (covariance) factors

Outputs

• Tsz
• Ksz
• Ysz
• Lx
• Tx
• Yx

References

[bnord]

Ideas

• lognormal distributions of properties with covariances
• power-law models of properties based on basic halo properties, like mass and redshift

[umetic]

Some references regarding intrinsic covariance of cluster properties (both theory and observations) https://ui.adsabs.harvard.edu/abs/2014MNRAS.441.3562E/abstract https://ui.adsabs.harvard.edu/abs/2018MNRAS.478.2618F/abstract https://ui.adsabs.harvard.edu/abs/2019NatCo..10.2504F/abstract https://ui.adsabs.harvard.edu/abs/2020MNRAS.492.4528S/abstract (and more)

[bnord]

design flow-through links to this question: https://github.com/skypyproject/skypy/issues/147#issuecomment-615288678

We might start with this issue and one on optical properties to decide which halo properties we need?

[itrharrison]

Issue deprecated by more specific examples. Please see Discussion pages for general discussion of which gas components and models to implement.