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Quantifying the thermal Sunyaev–Zel’dovich effect and excess millimetre emission in quasar environments

Hall, Kirsten R. and Schillaci, Alessandro (2019) Quantifying the thermal Sunyaev–Zel’dovich effect and excess millimetre emission in quasar environments. Monthly Notices of the Royal Astronomical Society, 490 (2). pp. 2315-2335. ISSN 0035-8711.

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In this paper, we probe the hot, post-shock gas component of quasar-driven winds through the thermal Sunyaev–Zel’dovich (tSZ) effect. Combining data sets from the Atacama Cosmology Telescope, the Herschel Space Observatory, and the Very Large Array, we measure average spectral energy distributions of 109 829 optically selected, radio quiet quasars from 1.4 to 3000 GHz in six redshift bins between 0.3 < z < 3.5. We model the emission components in the radio and far-infrared, plus a spectral distortion from the tSZ effect. At z > 1.91, we measure the tSZ effect at 3.8σ significance with an amplitude corresponding to a total thermal energy of 3.1 × 10⁶⁰ erg. If this energy is due to virialized gas, then our measurement implies quasar host halo masses are ∼6 × 10¹² h⁻¹ M⊙. Alternatively, if the host dark matter halo masses are ∼2 × 10¹² h⁻¹ M⊙ as some measurements suggest, then we measure a >90 per cent excess in the thermal energy over that expected due to virialization. If the measured SZ effect is primarily due to hot bubbles from quasar-driven winds, we find that (5^(+1.2)_(−1.3) per cent of the quasar bolometric luminosity couples to the intergalactic medium over a fiducial quasar lifetime of 100 Myr. An additional source of tSZ may be correlated structure, and further work is required to separate the contributions. At z ≤ 1.91, we detect emission at 95 and 148 GHz that is in excess of thermal dust and optically thin synchrotron emission. We investigate potential sources of this excess emission, finding that CO line emission and an additional optically thick synchrotron component are the most viable candidates.

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Hall, Kirsten R.0000-0002-4176-845X
Additional Information:© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2019 September 24. Received 2019 September 1; in original form 2019 July 26. Published: 03 October 2019. We thank the anonymous referee for their careful review and improvement of this manuscript. This work was supported by the U.S. National Science Foundation through awards AST-1440226, AST-0965625 and AST-0408698 for the Atacama Cosmology Telescope project, as well as awards PHY-1214379 and PHY-0855887. Funding was also provided by Princeton University, the University of Pennsylvania, and a Canada Foundation for Innovation award to the University of British Columbia. Atacama Cosmology Telescope operates in the Parque Astronomico Atacama in northern Chile under the auspices of the Comisión Nacional de Investigación Científica y Tecnológica de Chile. The Herschel-ATLAS is a project with Herschel, which is an European Space Agency space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from the National Aeronautics and Space Administration. The Herschel-ATLAS website is Part of this research project was conducted using computational resources at the Maryland Advanced Research Computing Center. DC acknowledges the financial assistance of the South African Radio Astronomy Observatory ( KM acknowledges support from the National Research Foundation of South Africa. LM is funded by the Comisión Nacional de Investigación Científica y Tecnológica de Chile Fondo Nacional de Desarrollo Científico y Tecnológico. grant no. 3170846.
Funding AgencyGrant Number
Princeton UniversityUNSPECIFIED
University of PennsylvaniaUNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
National Research Foundation (South Africa)UNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)3170846
Subject Keywords:galaxies: active – galaxies: evolution – (galaxies:) intergalactic medium – (galaxies:) quasars: general
Issue or Number:2
Record Number:CaltechAUTHORS:20191206-072903925
Persistent URL:
Official Citation:Kirsten R Hall, Nadia L Zakamska, Graeme E Addison, Nicholas Battaglia, Devin Crichton, Mark Devlin, Joanna Dunkley, Megan Gralla, J Colin Hill, Matt Hilton, Johannes Hubmayr, John P Hughes, Kevin M Huffenberger, Arthur Kosowsky, Tobias A Marriage, Loïc Maurin, Kavilan Moodley, Michael D Niemack, Lyman A Page, Bruce Partridge, Rolando Dünner Planella, Alessandro Schillaci, Cristóbal Sifón, Suzanne T Staggs, Edward J Wollack, Zhilei Xu, Quantifying the thermal Sunyaev–Zel’dovich effect and excess millimetre emission in quasar environments, Monthly Notices of the Royal Astronomical Society, Volume 490, Issue 2, December 2019, Pages 2315–2335,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100217
Deposited By: Tony Diaz
Deposited On:06 Dec 2019 18:43
Last Modified:06 Dec 2019 18:43

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