The Circumgalactic Medium from the CAMELS Simulations: Forecasting Constraints on Feedback Processes from Future Sunyaev-Zeldovich Observations

The Circumgalactic Medium from the CAMELS Simulations: Forecasting Constraints on Feedback Processes from Future Sunyaev-Zeldovich Observations. Moser, E., Battaglia, N., Nagai, D., Lau, E., Valle, L. F. M. P., Villaescusa-Navarro, F., Amodeo, S., Angles-Alcazar, D., Bryan, G. L., Dave, R., Hernquist, L., & Vogelsberger, M. arXiv:2201.02708 [astro-ph], January, 2022. arXiv: 2201.02708

Paper abstract bibtex

The cycle of baryons through the circumgalactic medium (CGM) is important to understand in the context of galaxy formation and evolution. In this study we forecast constraints on the feedback processes heating the CGM with current and future Sunyaev-Zeldovich (SZ) observations. To constrain these processes, we use a suite of cosmological simulations, the Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS), that varies four different feedback parameters of two previously existing hydrodynamical simulations, IllustrisTNG and SIMBA. We capture the dependencies of SZ radial profiles on these feedback parameters with an emulator, calculate their derivatives, and forecast future constraints on these feedback parameters from upcoming experiments. We find that for a DESI-like (Dark Energy Spectroscopic Instrument) galaxy sample observed by the Simons Observatory all four feedback parameters are able to be constrained (some within the \$10{\textbackslash}%\$ level), indicating that future observations will be able to further restrict the parameter space for these sub-grid models. Given the modeled galaxy sample and forecasted errors in this work, we find that the inner SZ profiles contribute more to the constraining power than the outer profiles. Finally, we find that, despite the wide range of AGN feedback parameter variation in the CAMELS simulation suite, we cannot reproduce the tSZ signal of galaxies selected by the Baryon Oscillation Spectroscopic Survey as measured by the Atacama Cosmology Telescope.

@article{moser_circumgalactic_2022,
	title = {The {Circumgalactic} {Medium} from the {CAMELS} {Simulations}: {Forecasting} {Constraints} on {Feedback} {Processes} from {Future} {Sunyaev}-{Zeldovich} {Observations}},
	shorttitle = {The {Circumgalactic} {Medium} from the {CAMELS} {Simulations}},
	url = {http://arxiv.org/abs/2201.02708},
	abstract = {The cycle of baryons through the circumgalactic medium (CGM) is important to understand in the context of galaxy formation and evolution. In this study we forecast constraints on the feedback processes heating the CGM with current and future Sunyaev-Zeldovich (SZ) observations. To constrain these processes, we use a suite of cosmological simulations, the Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS), that varies four different feedback parameters of two previously existing hydrodynamical simulations, IllustrisTNG and SIMBA. We capture the dependencies of SZ radial profiles on these feedback parameters with an emulator, calculate their derivatives, and forecast future constraints on these feedback parameters from upcoming experiments. We find that for a DESI-like (Dark Energy Spectroscopic Instrument) galaxy sample observed by the Simons Observatory all four feedback parameters are able to be constrained (some within the \$10{\textbackslash}\%\$ level), indicating that future observations will be able to further restrict the parameter space for these sub-grid models. Given the modeled galaxy sample and forecasted errors in this work, we find that the inner SZ profiles contribute more to the constraining power than the outer profiles. Finally, we find that, despite the wide range of AGN feedback parameter variation in the CAMELS simulation suite, we cannot reproduce the tSZ signal of galaxies selected by the Baryon Oscillation Spectroscopic Survey as measured by the Atacama Cosmology Telescope.},
	urldate = {2022-01-13},
	journal = {arXiv:2201.02708 [astro-ph]},
	author = {Moser, Emily and Battaglia, Nicholas and Nagai, Daisuke and Lau, Erwin and Valle, Luis Fernando Machado Poletti and Villaescusa-Navarro, Francisco and Amodeo, Stefania and Angles-Alcazar, Daniel and Bryan, Greg L. and Dave, Romeel and Hernquist, Lars and Vogelsberger, Mark},
	month = jan,
	year = {2022},
	note = {arXiv: 2201.02708},
	keywords = {Astrophysics - Cosmology and Nongalactic Astrophysics},
}

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