The Frontier Fields lens modelling comparison project
| العنوان: | The Frontier Fields lens modelling comparison project |
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| المؤلفون: | Traci L. Johnson, Jose M. Diego, Jori Liesenborgs, Marusa Bradac, Ryota Kawamata, A. Acebron, Masafumi Ishigaki, Eric Jullo, Adi Zitrin, Massimo Meneghetti, Daniel Lam, Marceau Limousin, Elisa Contini, Masamune Oguri, Austin Hoag, Kevin Sebesta, Priyamvada Natarajan, Liliya L. R. Williams, Stefano Borgani, G. De Lucia, Carlo Giocoli, Keren Sharon, Dan Coe |
| المساهمون: | Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, National Aeronautics and Space Administration (US), Agenzia Spaziale Italiana, Ministerio de Economía y Competitividad (España), Istituto Nazionale di Astrofisica, Meneghetti, M., Natarajan, P., Coe, D., Contini, E., De Lucia, G., Giocoli, C., Acebron, A., Borgani, S., Bradac, M., Diego, J. M., Hoag, A., Ishigaki, M., Johnson, T. L., Jullo, E., Kawamata, R., Lam, D., Limousin, M., Liesenborgs, J., Oguri, M., Sebesta, K., Sharon, K., Williams, L. L. R., Zitrin, A., Laboratoire d'Astrophysique de Marseille ( LAM ), Aix Marseille Université ( AMU ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National d'Etudes Spatiales ( CNES ) -Centre National de la Recherche Scientifique ( CNRS ), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 472 (3), pp.3177-3216. ⟨10.1093/mnras/stx2064⟩ Digital.CSIC. Repositorio Institucional del CSIC instname Mon.Not.Roy.Astron.Soc. Mon.Not.Roy.Astron.Soc., 2017, 472 (3), pp.3177-3216. 〈10.1093/mnras/stx2064〉 Mon.Not.Roy.Astron.Soc., 2017, 472 (3), pp.3177-3216. ⟨10.1093/mnras/stx2064⟩ Monthly Notices of the Royal Astronomical Society, 2017, 472 (3), pp.3177-3216. ⟨10.1093/mnras/stx2064⟩ |
| بيانات النشر: | HAL CCSD, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Accuracy and precision, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], gravitational lensing, FOS: Physical sciences, Magnification, Astrophysics::Cosmology and Extragalactic Astrophysics, clusters: general [Galaxies], strong [Gravitational lensing], 01 natural sciences, law.invention, clusters of galaxies, clusters of galaxie, Optics, gravitational lensing: weak, law, galaxies: high-redshift, 0103 physical sciences, high-redshift. [Galaxies], 010303 astronomy & astrophysics, Parametric statistics, Physics, gravitational lensing: strong, gravitational lensing: weak, galaxies: clusters: general, galaxies: high-redshift, Mass distribution, 010308 nuclear & particles physics, business.industry, strong, weak, galaxies, clusters, general, high-redshift, gravitational lensing: strong, Astronomy and Astrophysics, Galaxy, Lens (optics), True mass, Gravitational lens, Galaxies: high-redshift, Space and Planetary Science, galaxies: clusters: general, cosmology, business, weak [Gravitational lensing], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Algorithm, Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | Gravitational lensing by clusters of galaxies offers a powerful probe of their structure and mass distribution. Several research groups have developed techniques independently to achieve this goal. While these methods have all provided remarkably high-precision mass maps, particularly with exquisite imaging data from the Hubble Space Telescope (HST), the reconstructions themselves have never been directly compared. In this paper, we present for the first time a detailed comparison of methodologies for fidelity, accuracy and precision. For this collaborative exercise, the lens modelling community was provided simulated cluster images that mimic the depth and resolution of the ongoing HST Frontier Fields. The results of the submitted reconstructions with the un-blinded true mass profile of these two clusters are presented here. Parametric, free-form and hybrid techniques have been deployed by the participating groups and we detail the strengths and trade-offs in accuracy and systematics that arise for each methodology. We note in conclusion that several properties of the lensing clusters are recovered equally well by most of the lensing techniques compared in this study. For example, the reconstruction of azimuthally averaged density and mass profiles by both parametric and freeform methods matches the input models at the level of ~10 per cent. Parametric techniques are generally better at recovering the 2D maps of the convergence and of the magnification. For the best-performing algorithms, the accuracy in the magnification estimate is ~10 per cent at μtrue = 3 and it degrades to ~30 per cent at μtrue ~ 10. MM acknowledges support from the Italian Ministry of Foreign Affairs and International Cooperation, Directorate General for Country Promotion, from INAF via PRIN-INAF 2014 C.R.A. 1.05.01.94.02, and from ASI via contract ASI/INAF/I/023/12/0. This work was supported in part by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan and JSPS KAKENHI Grant Number 26800093 and 15H05892. AZ is supported by NASA through Hubble Fellowship grant #HST-HF2-51334.001-A awarded by STScI, which is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. JMD acknowledges support of the consolider project CSD2010-00064 and AYA2012-39475-C02-01 funded by the Ministerio de Economia y Competitividad, Spain. |
| وصف الملف: | STAMPA; application/pdf |
| اللغة: | English |
| تدمد: | 0035-8711 1365-2966 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff841721c03032eda1aadbd8113298aaTest https://hal.archives-ouvertes.fr/hal-01645181Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ff841721c03032eda1aadbd8113298aa |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00358711 13652966 |
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