• DOI:10.1093/mnras/stu1592
• Corpus ID: 8171745

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

@article{Gralla2014AMO,
  title={A measurement of the millimetre emission and the Sunyaev–Zel'dovich effect associated with low-frequency radio sources},
  author={Megan Gralla and Devin Crichton and Tobias A. Marriage and Wenli Mo and Paula Aguirre and Graeme E. Addison and Viktoria Asboth and Nicholas Battaglia and James J. Bock and J. Richard Bond and Mark J. Devlin and Rolando Dunner and Amir Hajian and Mark Halpern and Matt Hilton and Adam D. Hincks and Ren{\'e}e Hlo{\vz}ek and Kevin M. Huffenberger and John P. Hughes and R. J. Ivison and Arthur B. Kosowsky and Yen-Ting Lin and Danica Marsden and Felipe Menanteau and Kavilan Moodley and Gustavo Morales and Michael D. Niemack and Seb Oliver and Lyman A. Page and Bruce Partridge and Erik D. Reese and Felipe Rojas and Neelima Sehgal and Jonathan Sievers and Crist{\'o}bal Sif{\'o}n and David N. Spergel and Suzanne Staggs and E R Switzer and Marco P. Viero and Edward J. Wollack and Michael Zemcov},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2014},
  volume={445},
  pages={460-478}
}

• M. Gralla, D. Crichton, +38 authors M. Zemcov
• Published 30 October 2013
• Physics
• Monthly Notices of the Royal Astronomical Society

We present a statistical analysis of the millimetre-wavelength properties of 1.4 GHz-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 277 GHz from the Atacama Cosmology Telescope at the positions of a large sample of radio AGN selected at 1.4 GHz. The thermal SZ effect associated with the haloes that host the AGN is detected at the 5σ 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.