High Frequency Cluster Radio Galaxies: Luminosity Functions and Implications for SZE Selected Cluster Samples
| العنوان: | High Frequency Cluster Radio Galaxies: Luminosity Functions and Implications for SZE Selected Cluster Samples |
|---|---|
| المؤلفون: | Michael McDonald, John E. Carlstrom, Bradford Benson, C. Gangkofner, W. L. Holzapfel, R. Capasso, Sebastian Bocquet, David Rapetti, T. M. Crawford, Joseph J. Mohr, A. Saro, J. P. Dietrich, Christian L. Reichardt, T. de Haan, I-Non Chiu, Nikhel Gupta |
| المساهمون: | Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, Gupta, N., Saro, A., Mohr, J. J., Benson, B. A., Bocquet, S., Capasso, R., Carlstrom, J. E., Chiu, I., Crawford, T. M., de Haan, T., Dietrich, J. P., Gangkofner, C., Holzapfel, W. L., Mcdonald, M., Rapetti, D., Reichardt, C. L. |
| المصدر: | arXiv NASA Astrophysics Data System |
| بيانات النشر: | Oxford University Press (OUP), 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Cosmology and Nongalactic Astrophysics (astro-ph.CO), Radio galaxy, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy merger, 01 natural sciences, galaxies: clusters: general, galaxies: luminosity function, mass function, cosmology: observations, submillimetre: galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Galaxy group, 0103 physical sciences, clusters: general [galaxies], galaxie [submillimetre], Interacting galaxy, Brightest cluster galaxy, 010303 astronomy & astrophysics, Lenticular galaxy, Galaxy cluster, Astrophysics::Galaxy Astrophysics, luminosity function [galaxies], Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Space and Planetary Science, active [galaxies], Elliptical galaxy, observation [cosmology] |
| الوصف: | We study the overdensity of point sources in the direction of X-ray-selected galaxy clusters from the meta-catalogue of X-ray-detected clusters of galaxies (MCXC; < z > = 0.14) at South Pole Telescope (SPT) and Sydney University Molonglo Sky Survey (SUMSS) frequencies. Flux densities at 95, 150 and 220 GHz are extracted from the 2500 deg(2) SPT-SZ survey maps at the locations of SUMSS sources, producing a multifrequency catalogue of radio galaxies. In the direction of massive galaxy clusters, the radio galaxy flux densities at 95 and 150 GHz are biased low by the cluster Sunyaev-Zel'dovich Effect (SZE) signal, which is negative at these frequencies. We employ a cluster SZE model to remove the expected flux bias and then study these corrected source catalogues. We find that the high-frequency radio galaxies are centrally concentrated within the clusters and that their luminosity functions (LFs) exhibit amplitudes that are characteristically an order of magnitude lower than the cluster LF at 843 MHz. We use the 150 GHz LF to estimate the impact of cluster radio galaxies on an SPT-SZ like survey. The radio galaxy flux typically produces a small bias on the SZE signal and has negligible impact on the observed scatter in the SZE mass-observable relation. If we assume there is no redshift evolution in the radio galaxy LF then 1.8 +/- 0.7 per cent of the clusters with detection significance xi >= 4.5 would be lost from the sample. Allowing for redshift evolution of the form ( 1 + z) (2.5) increases the incompleteness to 5.6 +/- 1.0 per cent. Improved constraints on the evolution of the cluster radio galaxy LF require a larger cluster sample extending to higher redshift. Gordon and Betty Moore Foundation (Grant GBMF-947) |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c8350f64ba81757d4c823c9bef3f991 https://hdl.handle.net/1721.1/126886 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....6c8350f64ba81757d4c823c9bef3f991 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |