FRB dispersion measures directly constrain suppression of the matter power spectrum due to feedback at k ~ 0.1-3 h/Mpc, reduce posterior variance by a factor of ~8 at k~1 h/Mpc, and exclude extreme large-scale feedback scenarios at ~2 sigma.
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Varied cosmic ray feedback models from AGN in FIRE-3 simulations all quench massive galaxies consistently with observations but produce vastly different circumgalactic medium properties.
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Signatures of Suppressed Matter Clustering revealed by Fast Radio Bursts
FRB dispersion measures directly constrain suppression of the matter power spectrum due to feedback at k ~ 0.1-3 h/Mpc, reduce posterior variance by a factor of ~8 at k~1 h/Mpc, and exclude extreme large-scale feedback scenarios at ~2 sigma.
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Effects of Varied Cosmic Ray Feedback from AGN on Massive Galaxy Properties
Varied cosmic ray feedback models from AGN in FIRE-3 simulations all quench massive galaxies consistently with observations but produce vastly different circumgalactic medium properties.