TY - JOUR
T1 - Future constraints on halo thermodynamics from combined Sunyaev-Zel'dovich measurements
AU - Battaglia, Nicholas
AU - Ferraro, Simone
AU - Schaan, Emmanuel
AU - Spergel, David N.
N1 - Funding Information:
We thank Jim Bartlett, Tom Crawford, Colin Hill, Eiichiro Komatsu, Arthur Kosowsky, Mathew Madhavacheril, Mike Niemack, Lyman Page, Bjoern Soergel, and Suzanne Staggs for their constructive comments and helpful discussions. NB acknowledges the support from the Lyman Spitzer Jr. Fellowship. SF is funded by the Miller Institute for Basic Research in Science at the University of California, Berkeley. ES acknowledges support from the National Science Foundation grant NSF AST-1311756. The Flatiron Institute is supported by the Simons Foundation.
Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab.
PY - 2017/11/24
Y1 - 2017/11/24
N2 - The improving sensitivity of measurements of the kinetic Sunyaev-Zel'dovich (SZ) effect opens a new window into the thermodynamic properties of the baryons in halos. We propose a methodology to constrain these thermodynamic properties by combining the kinetic SZ, which is an unbiased probe of the free electron density, and the thermal SZ, which probes their thermal pressure. We forecast that our method constrains the average thermodynamic processes that govern the energetics of galaxy evolution like energetic feedback across all redshift ranges where viable halos sample are available. Current Stage-3 cosmic microwave background (CMB) experiments like AdvACT and SPT-3G can measure the kSZ and tSZ to greater than 100σ if combined with a DESI-like spectroscopic survey. Such measurements translate into percent-level constraints on the baryonic density and pressure profiles and on the feedback and non-thermal pressure support parameters for a given ICM model. This in turn will provide critical thermodynamic tests for sub-grid models of feedback in cosmological simulations of galaxy formation. The high fidelity measurements promised by the next generation CMB experiment, CMB-S4, allow one to further sub-divide these constraints beyond redshift into other classifications, like stellar mass or galaxy type.
AB - The improving sensitivity of measurements of the kinetic Sunyaev-Zel'dovich (SZ) effect opens a new window into the thermodynamic properties of the baryons in halos. We propose a methodology to constrain these thermodynamic properties by combining the kinetic SZ, which is an unbiased probe of the free electron density, and the thermal SZ, which probes their thermal pressure. We forecast that our method constrains the average thermodynamic processes that govern the energetics of galaxy evolution like energetic feedback across all redshift ranges where viable halos sample are available. Current Stage-3 cosmic microwave background (CMB) experiments like AdvACT and SPT-3G can measure the kSZ and tSZ to greater than 100σ if combined with a DESI-like spectroscopic survey. Such measurements translate into percent-level constraints on the baryonic density and pressure profiles and on the feedback and non-thermal pressure support parameters for a given ICM model. This in turn will provide critical thermodynamic tests for sub-grid models of feedback in cosmological simulations of galaxy formation. The high fidelity measurements promised by the next generation CMB experiment, CMB-S4, allow one to further sub-divide these constraints beyond redshift into other classifications, like stellar mass or galaxy type.
KW - CMBR experiments
KW - Sunyaev-Zeldovich eect
KW - feedback in galaxies
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U2 - 10.1088/1475-7516/2017/11/040
DO - 10.1088/1475-7516/2017/11/040
M3 - Article
AN - SCOPUS:85039450907
SN - 1475-7516
VL - 2017
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 11
M1 - 040
ER -