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dc.contributor.authorHardcastle, M. J.
dc.contributor.authorShimwell, T. W.
dc.contributor.authorTasse, C.
dc.contributor.authorBest, P. N.
dc.contributor.authorDrabent, A.
dc.contributor.authorJarvis, M. J.
dc.contributor.authorPrandoni, I.
dc.contributor.authorRottgering, H. J. A.
dc.contributor.authorSabater, J.
dc.contributor.authorSchwarz, D. J.
dc.date.accessioned2021-05-05T16:15:22Z
dc.date.available2021-05-05T16:15:22Z
dc.date.issued2021-04-07
dc.identifier.citationHardcastle , M J , Shimwell , T W , Tasse , C , Best , P N , Drabent , A , Jarvis , M J , Prandoni , I , Rottgering , H J A , Sabater , J & Schwarz , D J 2021 , ' The contribution of discrete sources to the sky temperature at 144 MHz ' , Astronomy & Astrophysics , vol. 648 , A10 . https://doi.org/10.1051/0004-6361/202038814
dc.identifier.issn0004-6361
dc.identifier.otherArXiv: http://arxiv.org/abs/2011.08294v1
dc.identifier.urihttp://hdl.handle.net/2299/24404
dc.descriptionThis paper is part of the 1st data release of the LoTSS Deep Fields. © 2020 The European Southern Observatory (ESO)
dc.description.abstractIn recent years, the level of the extragalactic radio background has become a point of considerable interest, with some lines of argument pointing to an entirely new cosmological synchrotron background. The contribution of the known discrete source population to the sky temperature is key to this discussion. Because of the steep spectral index of the excess over the cosmic microwave background, it is best studied at low frequencies where the signal is strongest. The Low-Frequency Array (LOFAR) wide and deep sky surveys give us the best constraints yet on the contribution of discrete extragalactic sources at 144 MHz, and in particular allow us to include contributions from diffuse, low-surface-brightness emission that could not be fully accounted for in previous work. We show that, even with these new data, known sources can still only account for around a quarter of the estimated extragalactic sky temperature at LOFAR frequencies.en
dc.format.extent7
dc.format.extent1367732
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysics
dc.subjectastro-ph.CO
dc.subjectastro-ph.GA
dc.titleThe contribution of discrete sources to the sky temperature at 144 MHzen
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionSPECS Deans Group
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecord10.1051/0004-6361/202038814
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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