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 Håkansson; 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 Moldón; R Mondal; S Ni; M Önnheim; M Parra; N Patra; A Peel; P Salomé; S Sánchez-Expósito; M Sargent; B Semelin; P Serra; A.K Shaw; A.X Shen; A Sjöberg; 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 Brüggen; J Cannon; R Chen; Francoise 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 Józsa; P Kamphuis; J.-P Kneib; M Lindqvist; B Liu; Y Liu; Y Mao; A Marchal; I Márquez; 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

Retour

SKA Science Data Challenge 2: analysis and results

Article de revue

Avec comité de lecture

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

2023

DOI: https://doi.org/10.1093/mnras/stad1375

Résumé

methods: data analysis

techniques: imaging spectroscopy

surveys

software: simulations

galaxies: statistics

radio lines: galaxies

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 familiarise 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 characterise 233245 neutral hydrogen (Hi) sources in a simulated data product representing a 2000~h SKA MID spectral line observation from redshifts 0.25 to 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 percent 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 datasets.

Fichiers et liens (2)

url

Find in HALAfficher

url

https://doi.org/10.1093/mnras/stad1375Afficher

Published (Version of record) Ouvrir

Indicateurs

1 Consultations de la notice

See more details

Détails

Titre: SKA Science Data Challenge 2: analysis and results
Créateurs - sans rôle: P Hartley - SKA Observatory
A Bonaldi - University of Manchester
R Braun - SKA Observatory
J.N.H.S Aditya - Shanghai Astronomical Observatory
S Aicardi - Centre National de la Recherche Scientifique
L Alegre - SKA Observatory
A Chakraborty - Indian Institute of Technology Indore
X Chen - Chinese Academy of Sciences
S Choudhuri - Queen Mary University of London
A.O Clarke - SKA Observatory
J Coles - University of Cambridge
J.S Collinson - SKA Observatory
D Cornu - Centre National de la Recherche Scientifique
L Darriba - Instituto de Astrofísica de Andalucía
M Delli Veneri
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 Håkansson - 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 - Netherlands Institute for Radio Astronomy
M Jagannath - PES University
S Jaiswal - Shanghai Astronomical Observatory
R.J Jurek - The University of Queensland
D Korber - École Polytechnique Fédérale de Lausanne
S Kitaeff - The University of Western Australia
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 Moldón - Instituto de Astrofísica de Andalucía
R Mondal - Tel Aviv University
S Ni - Northeastern University
M Önnheim - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M Parra
N Patra - Indian Institute of Technology Indore
A Peel - École Polytechnique Fédérale de Lausanne
P Salomé - Centre National de la Recherche Scientifique
S Sánchez-Expósito
M Sargent - University of Sussex
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 - Commonwealth Scientific and Industrial Research Organisation
A Sjöberg - 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 Brüggen - Universität Hamburg
J Cannon - Macalester College
R Chen - National Astronomical Observatories
Francoise Combes - Sorbonne Université
J Conway - Chalmers University of Technology
F Courbin - École Polytechnique Fédérale de Lausanne
J Ding - Sun Yat-sen University
G Fourestey - École Polytechnique Fédérale de Lausanne
J. Freundlich - Observatoire astronomique de Strasbourg
L Gao - Northeastern University
C Gheller - Osservatorio Astronomico di Cagliari
Q Guo - Chinese Academy of Sciences
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 Józsa
P Kamphuis - Ruhr University Bochum
J.-P Kneib - École Polytechnique Fédérale de Lausanne
M Lindqvist - Chalmers University of Technology
B Liu - Chinese Academy of Sciences
Y Liu - National Astronomical Observatories
Y Mao - Tsinghua University
A Marchal - University of Toronto
I Márquez - Instituto de Astrofísica de Andalucía
A Meshcheryakov - Space Research Institute
M Olberg - Chalmers University of Technology
N Oozeer - South African Radio Astronomy Observatory
M Pandey-Pommier - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
W Pei - National Astronomical Observatories
B Peng - Chinese Academy of Sciences
J Sabater - Royal Observatory
A Sorgho - Instituto de Astrofísica de Andalucía
J.L Starck - École Polytechnique Fédérale de Lausanne
C Tasse - Délégation Paris 7
A Wang
Y Wang
H Xi
X Yang
H Zhang
J Zhang
M Zhao
S Zuo
Détails de publication: Monthly Notices of the Royal Astronomical Society, Vol.523(2), pp.1967-1993
Identifiants: 99161290209311
Unité académique: Laboratoire Univers et Particules de Montpellier - LUPM
Langue: English
Type de ressource: Journal article
Champs locaux: hal-04049530