G
George Heald
Researcher at Commonwealth Scientific and Industrial Research Organisation
Publications - 401
Citations - 19605
George Heald is an academic researcher from Commonwealth Scientific and Industrial Research Organisation. The author has contributed to research in topics: Galaxy & LOFAR. The author has an hindex of 64, co-authored 375 publications receiving 16261 citations. Previous affiliations of George Heald include University of New Mexico & Max Planck Society.
Papers
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Journal ArticleDOI
Detection of the Diffuse H i Emission in the Circumgalactic Medium of NGC 891 and NGC 4565
Sanskriti Das,Amy Sardone,Adam K. Leroy,Smita Mathur,M. Gallagher,Nickolas M. Pingel,Daniel J. Pisano,George Heald +7 more
TL;DR: In this article, the GBT was used to detect 21 cm emission from neutral hydrogen (HI) in the circumgalactic medium (CGM) of the local edge-on galaxies NGC 891 and NGC 4565 using the Robert C. Byrd Green Bank Telescope (GBT).
Journal ArticleDOI
The redshift evolution of extragalactic magnetic fields
V. Pomakov,Shane O'Sullivan,Marcus Brüggen,Franco Vazza,Ettore Carretti,George Heald,Cathy Horellou,Timothy W. Shimwell,A. Shulevski,Tessa Vernstrom +9 more
TL;DR: In this article , the authors used data from the LOFAR Two-Metre Sky Survey: Data Release 2 (LoTSS DR2) to study the dependence of the Faraday rotation measure (RM) on redshift.
Posted Content
The Galactic Faraday rotation sky 2020
Sebastian Hutschenreuter,Craig S. Anderson,S. K. Betti,Geoffrey C. Bower,Jo-Anne Brown,Marcus Brüggen,Ettore Carretti,Tracy E. Clarke,Andrew Clegg,Allison H. Costa,Steve Croft,Cameron Van Eck,Bryan Gaensler,Francesco de Gasperin,Marijke Haverkorn,George Heald,Charles L. H. Hull,Makoto Inoue,Melanie Johnston-Hollitt,Jane F. Kaczmarek,Casey J. Law,Yik Ki Ma,David MacMahon,Sui Ann Mao,C. J. Riseley,Subhashis Roy,R. Shanahan,Timothy W. Shimwell,Jeroen Stil,Charlotte Sobey,Shane O'Sullivan,Cyril Tasse,Valentina Vacca,Tessa Vernstrom,Peter Williams,Melvyn Wright,Torsten A. Enßlin +36 more
TL;DR: In this paper, the authors presented an update to existing reconstructions of the Galactic Faraday rotation sky by processing almost all Faraday rotational data sets available at the end of the year 2020, which is a significant expansion on the 41,330 used in previous works.
Journal ArticleDOI
LOFAR MSSS: The Scaling Relation between AGN Cavity Power and Radio Luminosity at Low Radio Frequencies
G. Kokotanekov,Michael W. Wise,Michael W. Wise,George Heald,George Heald,John McKean,Laura Birzan,D. A. Rafferty,Leith Godfrey,M. de Vries,Huib Intema,J. W. Broderick,Martin J. Hardcastle,Annalisa Bonafede,Annalisa Bonafede,A. O. Clarke,R. J. van Weeren,Huub Röttgering,R. Pizzo,Marco Iacobelli,Emanuela Orru,Emanuela Orru,Aleksandar Shulevski,C. J. Riseley,Rene P. Breton,Błażej Nikiel-Wroczyński,S. S. Sridhar,S. S. Sridhar,Adam Stewart,Antonia Rowlinson,Antonia Rowlinson,A. J. van der Horst,Jeremy J. Harwood,G. Gürkan,D. Carbone,M. Pandey-Pommier,Cyril Tasse,Cyril Tasse,Anna M. M. Scaife,Luke Pratley,Luke Pratley,Chiara Ferrari,Judith H. Croston,V. N. Pandey,W. Jurusik,D. D. Mulcahy +45 more
TL;DR: In this article, the authors present a new analysis of the widely used relation between cavity power and radio luminosity in clusters of galaxies with evidence for strong AGN feedback, using two new surveys -the First Alternative Data Release of the TIFR GMRT Sky Survey (TGSS ADR1) at 148 MHz and LOFAR's first all-sky survey, MSSS at 140 MHz.
Proceedings ArticleDOI
LOFAR: Early imaging results from commissioning for Cygnus A
John McKean,Louise Ker,R. J. van Weeren,F. Batejat,Laura Birzan,Annalisa Bonafede,John Conway,F. de Gasperin,Chiara Ferrari,George Heald,N. J. Jackson,G. Macario,Emanuela Orrú,Roberto Pizzo,D. A. Rafferty,H. J. A. Röttgering,A. Shulevski,C. Tasse,S. van der Tol,I. M. van Bemmel,G. van Diepen,J. E. van Zwieten +21 more