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A measurement of the millimetre emission and the Sunyaev-Zel'dovich effect associated with low-frequency radio sources

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posted on 2023-06-08, 20:47 authored by Megan B Gralla, Devin Crichton, Tobias A Marriage, Wenli Mo, Paula Aguirre, Graeme E Addison, V Asboth, Nick Battaglia, James Bock, J Richard Bond, Mark J Devlin, Rolando Dünner, Amir Hajian, Mark Halpern, Matt Hilton, Adam D Hincks, Renée Hlozek, Kevin M Huffenberger, John P Hughes, R J Ivison, Arthur Kosowsky, Yen-Ting Lin, Danica Marsden, Felipe Menanteau, Kavilan Moodley, Gustavo Morales, Michael D Niemack, Seb OliverSeb Oliver, Lyman A Page, Bruce Partridge, Erik D Reese, Felipe Rojas, Neelima Sehgal, Jon Sievers, Cristóbal Sifón Sifon, David N Spergel, Suzanne T Staggs, Eric R Switzer, Marco P Viero, Edward J Wollack, Michael B Zemcov
We present a statistical analysis of the millimetre-wavelength properties of 1.4GHz-selected sources and a detection of the Sunyaev–Zel’dovich (SZ) effect associated with the haloes that host them. We stack data at 148, 218 and 277GHz from the Atacama Cosmology Telescope at the positions of a large sample of radio AGN selected at 1.4GHz. The thermal SZ effect associated with the haloes that host the AGN is detected at the 5s level through its spectral signature, representing a statistical detection of the SZ effect in some of the lowest mass haloes (average M 200 ˜ 10 13 M. h -1 70 ) studied to date. The relation between the SZ effect and mass (based on weak lensing measurements of radio galaxies) is consistent with that measured by Planck for local bright galaxies. In the context of galaxy evolution models, this study confirms that galaxies with radio AGN also typically support hot gaseous haloes. Adding Herschel observations allows us to show that the SZ signal is not significantly contaminated by dust emission. Finally, we analyse the contribution of radio sources to the angular power spectrum of the cosmic microwave background.

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

1

Volume

445

Page range

460-478

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-05-15

First Open Access (FOA) Date

2015-05-15

First Compliant Deposit (FCD) Date

2015-05-14

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