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25 April 2024 |
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Evidence for the Thermal Sunyaev-Zel'dovich Effect Associated with Quasar Feedback | | Devin Crichton
; Megan B. Gralla
; Kirsten Hall
; Tobias A. Marriage
; Nadia L. Zakamska
; Nick Battaglia
; J. Richard Bond
; Mark J. Devlin
; J. Colin Hill
; Matt Hilton
; Adam D. Hincks
; Kevin M. Huffenberger
; John P. Hughes
; Arthur Kosowsky
; Kavilan Moodley
; Michael D. Niemack
; Lyman A. Page
; Bruce Partridge
; Jonathan L. Sievers
; Cristobal Sifon
; Suzanne T. Staggs
; Marco P. Viero
; Edward J. Wollack
; | | Date: |
19 Oct 2015 | | Abstract: | Using a radio-quiet subsample of the Sloan Digital Sky Survey spectroscopic
quasar catalog, spanning redshifts 0.5-3.5, we derive the mean millimetre and
far-infrared quasar spectral energy densities via a stacking analysis of
Atacama Cosmology Telescope and Herschel-SPIRE data. We constrain the form and
evolution of the far-infrared emission finding 3-4$sigma$ evidence for the
presence of the thermal Sunyaev-Zel’dovich (SZ) effect in the millimetre bands.
We find this signal to be characteristic of a hot ionized gas component with
thermal energy $(6.2 pm 1.7) imes 10^{60}$erg. This amount of thermal energy
is an order of magnitude greater than would be expected assuming only hot gas
in virial equilibrium with the dark matter haloes of $(1-5) imes
10^{12}h^{-1}$M$_odot$ that these systems are expected to occupy, though the
highest quasar mass estimates found in the literature could explain a large
fraction of this energy. We find that our measurements are consistent with a
scenario in which quasars deposit up to $(14.5 pm 3.3)~ au_8^{-1}$ per cent
of their radiative energy into their circumgalactic environment if their
typical period of quasar activity is $ au_8 imes 10^8$ years. If quasar host
masses are high ($sim10^{13}h^{-1}$M$_odot$), then this percentage will be
reduced significantly. Furthermore, the uncertainty quoted for this percentage
is only statistical and additional systematic uncertainties (e.g., on quasar
bolometric luminosity) enter at the 40 per cent level. Finally, emission from
thermal dust is significant in these systems, with infrared luminosities of
$log_{10}(L_{
m ir}/{
m L}_odot)=11.4-12.2$, increasing to higher redshift.
We consider various models for dust emission. While sufficiently complex dust
models can obviate the SZ effect, the SZ interpretation remains favoured at the
3-4$sigma$ level for most models. | | Source: | arXiv, 1510.5656 | | Services: | Forum | Review | PDF | Favorites | |
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