dc.contributor.author | Croston, J. H. | |
dc.contributor.author | Ineson, J. | |
dc.contributor.author | Hardcastle, M. J. | |
dc.contributor.author | Mingo, B. | |
dc.date.accessioned | 2017-09-11T16:47:27Z | |
dc.date.available | 2017-09-11T16:47:27Z | |
dc.date.issued | 2017-09-11 | |
dc.identifier.citation | Croston , J H , Ineson , J , Hardcastle , M J & Mingo , B 2017 , ' A new method for finding and characterizing galaxy groups via low-frequency radio surveys ' , Monthly Notices of the Royal Astronomical Society , vol. 470 , no. 2 , stx1347 , pp. 1943-1949 . https://doi.org/10.1093/mnras/stx1347 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | http://hdl.handle.net/2299/19333 | |
dc.description | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. ©: 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | |
dc.description.abstract | We describe a new method for identifying and characterizing the thermodynamic state of large samples of evolved galaxy groups at high redshifts using high-resolution, low-frequency radio surveys, such as those that will be carried out with LOFAR and the SquareKilometreArray.We identify a sub-population of morphologically regular powerful [Fanaroff-Riley type II (FR II)] radio galaxies and demonstrate that, for this sub-population, the internal pressure of the radio lobes is a reliable tracer of the external intragroup/intracluster medium (ICM) pressure, and that the assumption of a universal pressure profile for relaxed groups enables the total mass and X-ray luminosity to be estimated. Using a sample of well-studied FR II radio galaxies, we demonstrate that our method enables the estimation of group/cluster X-ray luminosities over three orders of magnitude in luminosity to within a factor of ~2 from low-frequency radio properties alone. Our method could provide a powerful new tool for building samples of thousands of evolved galaxy groups at z > 1 and characterizing their ICM. | en |
dc.format.extent | 7 | |
dc.format.extent | 955825 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | Galaxies: active | |
dc.subject | X-rays: galaxies: clusters | |
dc.subject | Astronomy and Astrophysics | |
dc.subject | Space and Planetary Science | |
dc.title | A new method for finding and characterizing galaxy groups via low-frequency radio surveys | en |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=85023777422&partnerID=8YFLogxK | |
dc.identifier.url | https://arxiv.org/abs/1705.09510 | |
rioxxterms.versionofrecord | 10.1093/mnras/stx1347 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |