The Atacama Cosmology Telescope: Modeling the Gas Thermodynamics in BOSS CMASS galaxies from Kinematic and Thermal Sunyaev-Zel'dovich Measurements
Creators: name: Amodeo, Stefania
name: Battaglia, Nicholas
name: Schaan, Emmanuel
name: Ferraro, Simone
name: Moser, Emily
name: Aiola, Simone
name: Austermann, Jason E.
name: Beall, James A.
name: Bean, Rachel
name: Becker, Daniel T.
name: Bond, Richard J.
name: Calabrese, Erminia
name: Calafut, Victoria
name: Choi, Steve K.
name: Denison, Edward V.
name: Devlin, Mark
name: Duff, Shannon M.
name: Duivenvoorden, Adriaan J.
name: Dunkley, Jo
name: Dünner, Rolando
name: Gallardo, Patricio A.
name: Hall, Kirsten R.
name: Han, Dongwon
name: Hill, J. Colin
name: Hilton, Gene C.
name: Hilton, Matt
name: Hložek, Renée
name: Hubmayr, Johannes
name: Huffenberger, Kevin M.
name: Hughes, John P.
name: Koopman, Brian J.
name: MacInnis, Amanda
name: McMahon, Jeff
name: Madhavacheril, Mathew S.
name: Moodley, Kavilan
name: Mroczkowski, Tony
name: Naess, Sigurd
name: Nati, Federico
name: Newburgh, Laura B.
name: Niemack, Michael D.
name: Page, Lyman A.
name: Partridge, Bruce
name: Schillaci, Alessandro
name: Sehgal, Neelima
name: Sifón, Cristóbal
name: Spergel, David N.
name: Staggs, Suzanne
name: Storer, Emilie R.
name: Ullom, Joel N.
name: Vale, Leila R.
name: van Engelen, Alexander
name: Van Lanen, Jeff
name: Vavagiakis, Eve M.
name: Wollack, Edward J.
name: Xu, Zhilei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The thermal and kinematic Sunyaev-Zel'dovich effects (tSZ, kSZ) probe the thermodynamic properties of the circumgalactic and intracluster medium (CGM and ICM) of galaxies, groups, and clusters, since they are proportional, respectively, to the integrated electron pressure and momentum along the line-of-sight. We present constraints on the gas thermodynamics of CMASS galaxies in the Baryon Oscillation Spectroscopic Survey (BOSS) using new measurements of the kSZ and tSZ signals obtained in a companion paper. Combining kSZ and tSZ measurements, we measure within our model the amplitude of energy injection $εM_\star c^2$, where $M_\star$ is the stellar mass, to be $ε=(40\pm9)\times10^{-6}$, and the amplitude of the non-thermal pressure profile to be $α_{\rm Nth}&lt;0.2$ (2$σ$), indicating that less than 20% of the total pressure within the virial radius is due to a non-thermal component. We estimate the effects of including baryons in the modeling of weak-lensing galaxy cross-correlation measurements using the best-fit density profile from the kSZ measurement. Our estimate reduces the difference between the original theoretical model and the weak-lensing galaxy cross-correlation measurements in arXiv:1611.08606 by half but does not fully reconcile it. Comparing the tSZ measurements to cosmological simulations, we find that simulations underestimate the CGM pressure at large radii while they fare better in comparison with the kSZ measurements. This suggests that the energy injected via feedback models in the simulations that we compared against does not sufficiently heat the gas at these radii. We do not find significant disagreement at smaller radii. These measurements provide novel tests of current and future simulations. This work demonstrates the power of joint, high signal-to-noise kSZ and tSZ observations, upon which future cross-correlation studies will improve.
description: Corrected error in the algorithm that calculates the kSZ temperature profile for a given GNFW density model. The value of $\log_{\rm10} \rho_0$ changed by 0.75$\sigma$ in Tab.II and Fig.2, and affected the results in the left panels of Fig. 6. Conclusions are unchanged. Erratum published at https://link.aps.org/doi/10.1103/PhysRevD.107.049903