SKA Science Data Challenge 2: analysis and results

P. Hartley; A. Bonaldi; R. Braun; J. N. H. S. Aditya; S. Aicardi; L. Alegre; A. Chakraborty; X. Chen; S. Choudhuri; A. O. Clarke; J. Coles; J. S. Collinson; D. Cornu; L. Darriba; M. Delli Veneri; J. Forbrich; B. Fraga; A. Galan; J. Garrido; F. Gubanov; H. Hakansson; M. J. Hardcastle; C. Heneka; D. Herranz; K. M. Hess; M. Jagannath; S. Jaiswal; R. J. Jurek; D. Korber; S. Kitaeff; D. Kleiner; B. Lao; X. Lu; A. Mazumder; J. Moldon; R. Mondal; S. Ni; M. Onnheim; M. Parra; N. Patra; A. Peel; P. Salome; S. Sanchez-Exposito; M. Sargent; B. Semelin; P. Serra; A. K. Shaw; A. X. Shen; A. Sjoberg; L. Smith; A. Soroka; V Stolyarov; E. Tolley; M. C. Toribio; J. M. van der Hulst; A. Vafaei Sadr; L. Verdes-Montenegro; T. Westmeier; K. Yu; L. Yu; L. Zhang; X. Zhang; Y. Zhang; A. Alberdi; M. Ashdown; C. R. Bom; M. Brueggen; J. Cannon; R. Chen; F. Combes; J. Conway; F. Courbin; J. Ding; G. Fourestey; J. Freundlich; L. Gao; C. Gheller; Q. Guo; E. Gustavsson; M. Jirstrand; M. G. Jones; G. Jozsa; P. Kamphuis; J-P Kneib; M. Lindqvist; B. Liu; Y. Liu; Y. Mao; A. Marchal; I Marquez; A. Meshcheryakov; M. Olberg; N. Oozeer; M. Pandey-Pommier; W. Pei; B. Peng; J. Sabater; A. Sorgho; J. L. Starck; C. Tasse; A. Wang; Y. Wang; H. Xi; X. Yang; H. Zhang; J. Zhang; M. Zhao; S. Zuo

doi:10.1093/mnras/stad1375

Back

SKA Science Data Challenge 2: analysis and results

Journal article

Peer reviewed

SKA Science Data Challenge 2: analysis and results

P. Hartley, A. Bonaldi, R. Braun, J. N. H. S. Aditya, S. Aicardi, L. Alegre, A. Chakraborty, X. Chen, S. Choudhuri, A. O. Clarke, …

Monthly notices of the Royal Astronomical Society, Vol.523(2), pp.1967-1993

05/30/2023

DOI: 10.1093/mnras/stad1375

View Online

Abstract

The Square Kilometre Array Observatory (SKAO) will explore the radio sky to new depths in order to conduct transformational science. SKAO data products made available to astronomers will be correspondingly large and complex, requiring the application of advanced analysis techniques to extract key science findings. To this end, SKAO is conducting a series of Science Data Challenges, each designed to familiarize the scientific community with SKAO data and to drive the development of new analysis techniques. We present the results from Science Data Challenge 2 (SDC2), which invited participants to find and characterize 233 245 neutral hydrogen (H i) sources in a simulated data product representing a 2000 h SKA-Mid spectral line observation from redshifts 0.25-0.5. Through the generous support of eight international supercomputing facilities, participants were able to undertake the Challenge using dedicated computational resources. Alongside the main challenge, 'reproducibility awards' were made in recognition of those pipelines which demonstrated Open Science best practice. The Challenge saw over 100 participants develop a range of new and existing techniques, with results that highlight the strengths of multidisciplinary and collaborative effort. The winning strategy - which combined predictions from two independent machine learning techniques to yield a 20 per cent improvement in overall performance - underscores one of the main Challenge outcomes: that of method complementarity. It is likely that the combination of methods in a so-called ensemble approach will be key to exploiting very large astronomical data sets.

Physical Sciences

Astronomy & Astrophysics

Science & Technology

Details

Title: Subtitle: SKA Science Data Challenge 2: analysis and results
Creators: P. Hartley - SKA Observatory
A. Bonaldi - University of Manchester
R. Braun - SKA Observatory
J. N. H. S. Aditya - Shanghai Astronomical Observatory
S. Aicardi - Observatoire de Paris
L. Alegre - SKA Observatory
A. Chakraborty - Indian Institute of Technology Indore
X. Chen - National Astronomical Observatories
S. Choudhuri - Queen Mary University of London
A. O. Clarke - SKA Observatory
J. Coles - University of Cambridge
J. S. Collinson - SKA Observatory
D. Cornu - Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
L. Darriba - Instituto de Astrofísica de Andalucía
M. Delli Veneri - University of Naples Federico II
J. Forbrich - University of Hertfordshire
B. Fraga - Centro Brasileiro de Pesquisas Físicas
A. Galan - École Polytechnique Fédérale de Lausanne
J. Garrido - Instituto de Astrofísica de Andalucía
F. Gubanov - Lomonosov Moscow State University
H. Hakansson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. J. Hardcastle - University of Hertfordshire
C. Heneka - Universität Hamburg
D. Herranz - Instituto de Física de Cantabria
K. M. Hess - Instituto de Astrofísica de Andalucía
M. Jagannath - PES University
S. Jaiswal - Shanghai Astronomical Observatory
R. J. Jurek - University of Queensland
D. Korber - École Polytechnique Fédérale de Lausanne
S. Kitaeff - International Centre for Radio Astronomy Research
D. Kleiner - Osservatorio Astronomico di Cagliari
B. Lao - Shanghai Astronomical Observatory
X. Lu - Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
A. Mazumder - Indian Institute of Technology Indore
J. Moldon - Instituto de Astrofísica de Andalucía
R. Mondal - Tel Aviv University
S. Ni - Northeastern University
M. Onnheim - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Parra - Instituto de Astrofísica de Andalucía
N. Patra - Indian Institute of Technology Indore
A. Peel - École Polytechnique Fédérale de Lausanne
P. Salome - Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
S. Sanchez-Exposito - Instituto de Astrofísica de Andalucía
M. Sargent - École Polytechnique Fédérale de Lausanne
B. Semelin - Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
P. Serra - Osservatorio Astronomico di Cagliari
A. K. Shaw - Indian Institute of Technology Kharagpur
A. X. Shen - Astronomy and Space
A. Sjoberg - Fraunhofer Chalmers Research Centre for Industrial Mathematics
L. Smith - University of Cambridge
A. Soroka - Lomonosov Moscow State University
V Stolyarov - University of Cambridge
E. Tolley - École Polytechnique Fédérale de Lausanne
M. C. Toribio - Chalmers University of Technology
J. M. van der Hulst - University of Groningen
A. Vafaei Sadr - University of Geneva
L. Verdes-Montenegro - Instituto de Astrofísica de Andalucía
T. Westmeier - International Centre for Radio Astronomy Research
K. Yu - National Astronomical Observatories
L. Yu - National Astronomical Observatories
L. Zhang - Sun Yat-sen University
X. Zhang - Northeastern University
Y. Zhang - Shanghai Astronomical Observatory
A. Alberdi - Instituto de Astrofísica de Andalucía
M. Ashdown - University of Cambridge
C. R. Bom - Centro Brasileiro de Pesquisas Físicas
M. Brueggen - Univ Hamburg, Hamburg Observ, Gojenbergsweg 112, D-21029 Hamburg, Germany
J. Cannon - Macalester College
R. Chen - National Astronomical Observatories
F. Combes - Université Paris Sciences et Lettres
J. Conway - Chalmers University of Technology
F. Courbin - École Polytechnique Fédérale de Lausanne
J. Ding - Sun Yat-sen University
G. Fourestey - Observatory of Strasbourg
J. Freundlich - Observatory of Strasbourg
L. Gao - Northeastern University
C. Gheller - Osservatorio Astronomico di Cagliari
Q. Guo - National Astronomical Observatories
E. Gustavsson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Jirstrand - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. G. Jones - University of Arizona
G. Jozsa - South African Radio Astronomy Observatory
P. Kamphuis - Ruhr University Bochum
J-P Kneib - École Polytechnique Fédérale de Lausanne
M. Lindqvist - Chalmers University of Technology
B. Liu - National Astronomical Observatories
Y. Liu - National Astronomical Observatories
Y. Mao - Tsinghua University
A. Marchal - Canadian Institute for Theoretical Astrophysics
I Marquez - Instituto de Astrofísica de Andalucía
A. Meshcheryakov - Space Research Institute
M. Olberg - Chalmers University of Technology
N. Oozeer - Laboratoire Univers et Particules de Montpellier
M. Pandey-Pommier - Laboratoire Univers et Particules de Montpellier
W. Pei - National Astronomical Observatories
B. Peng - National Astronomical Observatories
J. Sabater - Royal Observatory
A. Sorgho - Instituto de Astrofísica de Andalucía
J. L. Starck - Galaxies, Etoiles, Physique et Instrumentation
C. Tasse - Délégation Paris 7
A. Wang - Shanghai Astronomical Observatory
Y. Wang - National Astronomical Observatories
H. Xi - National Astronomical Observatories
X. Yang - Shanghai Astronomical Observatory
H. Zhang - Sun Yat-sen University
J. Zhang - Northeastern University
M. Zhao - Northeastern University
S. Zuo - Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
Resource Type: Journal article
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.523(2), pp.1967-1993
Publisher: Oxford Univ Press
DOI: 10.1093/mnras/stad1375
ISSN: 0035-8711
eISSN: 1365-2966
Number of pages: 27
Grant note: 291531 / European Research Council under the European Union 7th Framework Programme (FP/2007-2013)/ERC Grant QYZDJ-SSW-SLH017; JCTD-2019-05 / Chinese Academy of Science (CAS); Chinese Academy of Sciences 201700648 / Swedish Research Council TED2021-130231B-I00 / ERDF from the EU CMS-CSST-2021-A03; CMS-CSST-2021-B01 / China Manned Space RTI2018-096228-B-C31; PID2021-123930OB-C21 / FEDER, UE; European Union (EU) 65043 / CEFIPRA foundation 824064 / European Union; European Union (EU) R18-RT-3082 / Economic Transformation, Industry, Knowledge and Universities Council of the Regional Government of Andalusia Fraunhofer Cluster of Excellence Cognitive Internet Technologies SKA-SPAIN - Ministry of Science and Innovation (MCIN) 390833306 / Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - EXC 2121 Quantum Universe'; German Research Foundation (DFG) ST/P006809/1 / UK STFC via the CDT studentship Netherlands Foundation for Scientific Research NWO; Netherlands Organization for Scientific Research (NWO) DOC01497 / Operational Program ESF Andalucia Onsala Space Observatory IZSEZO_202357 / Swiss National Science Foundation; Swiss National Science Foundation (SNSF) 2018YFE0120800; 2017YFA0402603; 2018YFA0404504; 2018YFA9494691 / National Key RD Program 679627 / European Research Council (ERC) under the European Union; European Research Council (ERC) 11633004; 11975072; 11835009; 11890691; 12033008 / National Natural Science Foundation of China (NSFC) European Science Cluster of Astronomy and Particle Physics ESFRI Research Infrastructures project
Language: English
Date published: 05/30/2023
Academic Unit: Physics and Astronomy
Record Identifier: 9984627199802771

Metrics

1 Record Views

See more details