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• W3100615013 abstract "The non-gravitational energy feedback is of crucial importance in modeling/simulating clusters to be used as cosmological probes. AGNs are, arguably, of primary importance in injecting energy in the cluster cores. We make the first estimate of non-gravitational energy {it profiles} in galaxy cluster cores (and beyond) from observational data. Comparing the observed entropy profiles within $r_{500}$, from the Representative {it XMM-Newton} Cluster Structure Survey (REXCESS), to simulated entropy profiles from both AMR and SPH non-radiative simulations, we estimate the amount of non-gravitational energy, $E_{rm ICM}$, contained in the ICM. Adding the radiative losses we estimate the total energy feedback, $E_{rm Feedback}$, into the clusters. The profiles for the energy deposition, $Delta E_{rm ICM}(x)$, in the inner regions differ for Cool-Core (CC) and Non Cool-Core (NCC) clusters, decreasing after accounting for the radiative cooling. The total feedback energy scales with the mean spectroscopic temperature as $E_{rm Feedback} propto T_{rm sp}^{2.52 pm0.08}$ and $E_{rm Feedback} propto T_{rm sp}^{2.17 pm 0.11}$, when compared with the baseline SPH and AMR profiles respectively. The scatter in the two cases is 15% and 23%, respectively. The mean non-gravitational energy per particle within $r_{500}$, is $epsilon_{rm ICM} = {2.8} pm {0.8}$ keV for the SPH theoretical relation and $epsilon_{rm ICM} = {1.7} pm {0.9}$ keV for the AMR theoretical relation. We use the {it NRAO/VLA Sky Survey} (NVSS) source catalog to determine the radio luminosity, $L_R$, at 1.4 GHz of the central source(s) of our sample. For $T_{rm sp} > 3$ keV, the $E_{rm Feedback}$ correlates with $L_R$. We show that AGNs could provide a significant component of the feedback. (Abridged)" @default.
• W3100615013 created "2020-11-23" @default.
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• W3100615013 date "2013-10-01" @default.
• W3100615013 modified "2023-09-26" @default.
• W3100615013 title "ACTIVE GALACTIC NUCLEUS FEEDBACK AND ENTROPY INJECTION IN GALAXY CLUSTER CORES" @default.
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• W3100615013 doi "https://doi.org/10.1088/0004-637x/776/2/84" @default.
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