The Evolutionary Map of the Universe: A new radio atlas for the southern hemisphere sky

A. M. Hopkins (1); A. Kapinska (2); J. Marvil (2); T. Vernstrom (3; 4); J. D. Collier (5; 6; 7); R. P. Norris (8; 7); Y. A. Gordon (9); S. W. Duchesne (3); L. Rudnick (10); N. Gupta (3); E. Carretti (11); C. S. Anderson (12); S. Dai (8); G. G\"urkan (13; 14); D. Parkinson (15); I. Prandoni (11); S. Riggi (16); C. S. Saraf (15); Y. K. Ma (12); M. D. Filipovi\'c (7); G. Umana (16); B. Bahr-Kalus (17; 18; 19); B. S. Koribalski (8; 7); E. Lenc (8); A. Ingallinera (16); J. Afonso (20; 21); A. Ahmad (7); U. T. Ahmed (22); E. L. Alexander (23); H. Andernach (24; 25); J. Asorey (26); A. J. Battisti (27; 12; 28); M. Bilicki (29); A. Botteon (11); M. J. I. Brown (30); M. Br\"uggen (31); M. Cowley (32; 33); K. C. Dage (34); C. L. Hale (35); M.J. Hardcastle (13); R. Kothes (36; 37); S. Lazarevi\'c (7; 8; 38); Y.-T. Lin (39); K. J. Luken (7); J. P. Moss (40); J. Prathap (1; 41; 28); S. F. Rahman (42; 43); T. H. Reiprich (44); C. J. Riseley (45; 46; 47); M. Salvato (48); N. Seymour (49); S. S. Shabala (50); D. J. B. Smith (13); M. Vaccari (51; 52; 53); J. Th. van Loon (54); O. I. Wong (3; 4); R. Z. E. Alsaberi (55; 7); A. D. Asher (7; 8); B. D. Ball (37); D. Barbosa (20; 21); N. Biava (24; 56); A. C. Bradley (7); R. Carvajal (20; 21); E. J. Crawford (7); T. J. Galvin (3); M. T. Huynh (3; 4); D. A. Leahy (57); I. Matute (20; 21); V. A. Moss (8); C. Pappalardo (20; 21); Z. J. Smeaton (7); V. Velovi\'c (7); T. Zafar (1) ((1) Macquarie University Australia; (2) National Radio Astronomy Observatory USA; (3); Australia Telescope National Facility CSIRO Space; Astronomy Bentley Australia; (4) ICRAR The University of Western Australia Crawley Australia; (5) Australian SKA Regional Centre Curtin Institute of Radio Astronomy (CIRA) Bentley Australia; (6) Inter-University Institute for Data Intensive Astronomy (IDIA) University of Cape Town South Africa; (7) Western Sydney University Penrith Australia; (8) Australia Telescope National Facility CSIRO Space; Astronomy Epping Australia; (9) University of Wisconsin-Madison Madison USA; (10) University of Minnesota Minneapolis USA; (11) INAF - Istituto di Radioastronomia Bologna Italy; (12) Australian National University Canberra Australia; (13) University of Hertfordshire Hatfield UK; (14) Australia Telescope National Facility CSIRO Space; Astronomy Bentley Australia; (15) Korea Astronomy; Space Science Institute Daejeon Republic of Korea; (16) INAF - Osservatorio Astrofisico di Catania Italy; (17) INAF - Osservatorio Astrofisico di Torino Pino Torinese Italy; (18) INFN - Sezione di Torino Italy; (19) Universit\`a degli Studi di Torino Italy; (20) Instituto de Astrof\'isica e Ci\^encias do Espa\c{c}o Universidade de Lisboa Lisbon Portugal; (21) Departamento de F\'isica Faculdade de Ci\^encias Universidade de Lisboa Lisbon Portugal; (22) Australian Astronomical Optics Macquarie University Australia; (23) University of Leeds UK; (24) Th\"uringer Landessternwarte Tautenburg Germany; (25) Universidad de Guanajuato Mexico; (26) Universidad de Zaragoza Spain; (27) International Centre for Radio Astronomy Research (ICRAR) University of Western Australia Crawley Australia; (28) ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) Australia; (29) Center for Theoretical Physics Polish Academy of Sciences Warsaw Poland; (30) Monash University Australia; (31) University of Hamburg Germany; (32) Queensland University of Technology Brisbane Australia; (33) University of Southern Queensland Toowoomba Australia; (34) International Centre for Radio Astronomy Research - Curtin University Perth Australia; (35) Department of Physics; University of Oxford UK; (36) Herzberg Research Centre for Astronomy; Astrophysics National Research Council Canada Penticton Canada; (37) University of Alberta Edmonton Canada; (38) Astronomical Observatory Belgrade Serbia; (39) Institute of Astronomy; Astrophysics Academia Sinica (ASIAA) Taipei Taiwan; (40) Victoria University of Wellington Kelburn Wellington New Zealand; (41) Macquarie University Astrophysics; Space Technologies Research Centre Sydney Australia; (42) Lahore University of Management Sciences (LUMS) Pakistan; (43) NCBC at NED University of Engineering; Technology Pakistan; (44) University of Bonn Germany; (45) Ruhr-Universit\"at Bochum Germany; (46) Universit\`a degli Studi di Bologna Italy; (47) INAF - Istituto di Radioastronomia Bologna Italy; (48) Max-Planck Institute for Extraterrestrial Physics Garching Germany; (49) International Centre for Radio Astronomy Research Curtin University Bentley Australia; (50) University of Tasmania Hobart Australia; (51) Inter-University Institute for Data Intensive Astronomy; Department of Physics; Astronomy University of the Western Cape Cape Town South Africa; (52) Inter-University Institute for Data Intensive Astronomy Department of Astronomy University of Cape Town South Africa; (53) INAF - Istituto di Radioastronomia Bologna Italy; (54) Lennard-Jones Laboratories Keele University UK; (55) Gifu University Gifu Japan; (56) INAF - Istituto di Radioastronomia Bologna Italy; (57) University of Calgary Canada)

arXiv:2505.08271·astro-ph.GA·May 28, 2025

The Evolutionary Map of the Universe: A new radio atlas for the southern hemisphere sky

A. M. Hopkins (1), A. Kapinska (2), J. Marvil (2), T. Vernstrom (3, 4), J. D. Collier (5, 6, 7), R. P. Norris (8, 7), Y. A. Gordon (9), S. W. Duchesne (3), L. Rudnick (10), N. Gupta (3), E. Carretti (11), C. S. Anderson (12), S. Dai (8), G. G\"urkan (13, 14), D. Parkinson (15)

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TL;DR

The paper introduces the EMU survey conducted with ASKAP, creating a comprehensive radio atlas of the southern sky to advance astrophysical research and provide valuable data for future studies.

Contribution

It presents the design, implementation, and expected scientific impact of the EMU survey, including data processing and integration with other astronomical projects.

Findings

01

High-quality radio images of the southern sky produced

02

Extensive data pipeline and data products developed

03

Enhanced understanding of radio sources and cosmic evolution

Abstract

We present the Evolutionary Map of the Universe (EMU) survey conducted with the Australian Square Kilometre Array Pathfinder (ASKAP). EMU aims to deliver the touchstone radio atlas of the southern hemisphere. We introduce EMU and review its science drivers and key science goals, updated and tailored to the current ASKAP five-year survey plan. The development of the survey strategy and planned sky coverage is presented, along with the operational aspects of the survey and associated data analysis, together with a selection of diagnostics demonstrating the imaging quality and data characteristics. We give a general description of the value-added data pipeline and data products before concluding with a discussion of links to other surveys and projects and an outline of EMU's legacy value.

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