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  • Hartley, PhilippaSKA Organisation (author)

SKA Science Data Challenge 2: analysis and results

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:93499711-f315-4a3f-9a6a-064b11ee7462
  • https://research.chalmers.se/publication/536322URI
  • https://doi.org/10.1093/mnras/stad1375DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Bonaldi, A.University of Manchester,SKA Organisation (author)
  • Braun, RobertSKA Organisation (author)
  • Aditya, J. N.H.S.Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (author)
  • Aicardi, S.Observatoire de Paris,Paris Observatory (author)
  • Alegre, L.University of Edinburgh,SKA Organisation (author)
  • Chakraborty, A.Indian Institute of Technology (author)
  • Chen, X.Chinese Academy of Sciences (author)
  • Choudhuri, S.Indian Institute of Technology,Queen Mary University of London (author)
  • Clarke, A. O.SKA Organisation (author)
  • Coles, J.University Of Cambridge (author)
  • Collinson, J. S.SKA Organisation (author)
  • Cornu, D.Observatoire de Paris,Paris Observatory (author)
  • Darriba, L.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Delli Veneri, M.Universita Degli Studi Di Napoli Federico Ii,University of Naples Federico II (author)
  • Forbrich, J.University of Hertfordshire (author)
  • Fraga, B. (author)
  • Galan, A.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Garrido, J.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Gubanov, F.M. V. Lomonosov Moscow State University (author)
  • Håkansson, HenrikStiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC) (author)
  • Hardcastle, M. J.University of Hertfordshire (author)
  • Heneka, C.Universität Hamburg,University of Hamburg (author)
  • Herranz, D.CSIC-UC - Instituto de Física de Cantabria (IFCA) (author)
  • Hess, K. M.Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON),Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Jagannath, M. (author)
  • Jaiswal, SumitShanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (author)
  • Jurek, R. J.University of Queensland (author)
  • Korber, D.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Kitaeff, S.University of Western Australia (author)
  • Kleiner, D.Istituto nazionale di astrofisica (INAF) (author)
  • Lao, B. Q.Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (author)
  • Lu, X.Observatoire de Paris,Paris Observatory (author)
  • Mazumder, A.Indian Institute of Technology (author)
  • Moldon, J.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Mondal, R.Tel Aviv University (author)
  • Ni, S. (author)
  • Önnheim, Magnus,1985Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC)(Swepub:cth)onnheimm (author)
  • Parra, M.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Patra, N.Raman Research Institute,Indian Institute of Technology (author)
  • Peel, A.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Salomé, P.Observatoire de Paris,Paris Observatory (author)
  • Sánchez-Expósito, S.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Sargent, M.University of Sussex,International Space Science Institute,Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Semelin, B.Observatoire de Paris,Paris Observatory (author)
  • Serra, P.Istituto nazionale di astrofisica (INAF) (author)
  • Shaw, A. K.Indian Institute of Technology (author)
  • Shen, A. X.Commonwealth Scientific and Industrial Research Organisation (CSIRO) (author)
  • Sjöberg, Anders,1989Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC)(Swepub:cth)andsjob (author)
  • Smith, L.University Of Cambridge (author)
  • Soroka, A.M. V. Lomonosov Moscow State University (author)
  • Stolyarov, V.Russian Academy of Sciences,University Of Cambridge (author)
  • Tolley, E.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Toribio Perez, Maria Carmen,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)toribio (author)
  • van der Hulst, J. M.Rijksuniversiteit Groningen,University of Groningen (author)
  • Vafaei Sadr, A.Université de Genève,University of Geneva (author)
  • Verdes-Montenegro, L.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Westmeier, T.University of Western Australia (author)
  • Yu, K.Chinese Academy of Sciences (author)
  • Yu, L.Chinese Academy of Sciences (author)
  • Zhang, L.Sun Yat-Sen University,Peng Cheng Laboratory (author)
  • Zhang, X. (author)
  • Zhang, Y.Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (author)
  • Alberdi, AntxonInstituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Ashdown, M.University Of Cambridge (author)
  • Bom, C. R. (author)
  • Brüggen, M.Universität Hamburg,University of Hamburg (author)
  • Cannon, J.Macalester College (author)
  • Chen, R.Chinese Academy of Sciences (author)
  • Combes, FrançoiseObservatoire de Paris,Paris Observatory,Collège de France (author)
  • Conway, John,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jconway (author)
  • Courbin, FrédéricEcole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Ding, J.Sun Yat-Sen University (author)
  • Fourestey, G.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Freundlich, J. (author)
  • Gao, L. (author)
  • Gheller, C.Istituto nazionale di astrofisica (INAF) (author)
  • Guo, Q.Chinese Academy of Sciences (author)
  • Gustavsson, Emil,1987Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC)(Swepub:cth)emilg (author)
  • Jirstrand, Mats,1968Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC)(Swepub:cth)jirstran (author)
  • Jones, M. G.University of Arizona (author)
  • Józsa, G. I.G. (author)
  • Kamphuis, PeterRuhr-Universität Bochum (author)
  • Kneib, J.P.J.P.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Lindqvist, Michael,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mlq (author)
  • Liu, B.Chinese Academy of Sciences (author)
  • Liu, Y.Chinese Academy of Sciences (author)
  • Mao, Y.Tsinghua University (author)
  • Marchal, AntoineInstitut canadien d'astrophysique théorique,Canadian Institute for Theoretical Astrophysics (author)
  • Márquez, I.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Meshcheryakov, A.Russian Academy of Sciences (author)
  • Olberg, Michael,1956Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)olberg (author)
  • Oozeer, N. (author)
  • Pandey-Pommier, M.Laboratoire Univers et Particules de Montpellier (author)
  • Pei, W.Chinese Academy of Sciences (author)
  • Peng, B.Chinese Academy of Sciences (author)
  • Sabater, J.University of Edinburgh (author)
  • Sorgho, A.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Starck, J. L.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Tasse, C.Centre national de la recherche scientifique (CNRS),Rhodes University (author)
  • SKA OrganisationUniversity of Manchester (creator_code:org_t)

Related titles

  • In:Monthly Notices of the Royal Astronomical Society523:2, s. 1967-19930035-87111365-2966

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Hartley, Philipp ...
Bonaldi, A.
Braun, Robert
Aditya, J. N.H.S ...
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