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Constraining AGN feedback model with SZ profile

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arxiv 2111.02088 v2 pith:GWSTJ6JJ submitted 2021-11-03 astro-ph.CO

Constraining AGN feedback model with SZ profile

Hideki Tanimura , Gary Hinshaw , Ian G. McCarthy , Ludovic Van Waerbeke , Nabila Aghanim , Yin-Zhe Ma , Alexander Mead , Tilman Troster
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Alireza Hojjati Bruno Moraes
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keywords modelprofilefeedbackaveragecomparedgalaxygroupssimulations
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Relativistic jets from AGN have a wide range of impacts on galaxy groups and clusters and are key for understanding their formation and physical properties. However, this non-gravitational process is not well understood. Galaxy groups with shallow gravitational potentials are ideal laboratories to study and constrain the AGN feedback model. We studied hot gas in ~66,000 SDSS LRG halos with an average halo mass of 3 x 10^13 Msun using the Planck tSZ map. We have detected their average tSZ radial profile at ~17 sigma and compared it with the cosmo-OWLS cosmological hydrodynamical simulations with different AGN feedback models. The best agreement has been obtained for the AGN 8.0 model in the simulations. We have also compared our measured tSZ profile with the prediction from the universal pressure profile assuming the self-similar relation and found them consistent if the model accounts for the clustering of neighboring haloes via a two-halo term.

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Cited by 1 Pith paper

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