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Giocoli, C.; Meneghetti, M.; Rasia, E.; Borgani, S.; Despali, G.; Lesci, G. F.; Marulli, F.; Moscardini, L.; Sereno, M.; Cui, W.; Knebe, A.; Yepes, G.; Castro, T.; Corasaniti, P.-S.; Pires, S.; Castignani, G.; Schrabback, T.; Pratt, G. W.; Le Brun, A. M. C.; Aghanim, N.; Amendola, L.; Auricchio, N.; Baldi, M.; Bodendorf, C.; [...]

Euclid preparation : XXXII. Evaluating the weak-lensing cluster mass biases using the Three Hundred Project hydrodynamical simulations

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  • Media type: E-Article
  • Title: Euclid preparation : XXXII. Evaluating the weak-lensing cluster mass biases using the Three Hundred Project hydrodynamical simulations : XXXII. Evaluating the weak-lensing cluster mass biases using the Three Hundred Project hydrodynamical simulations
  • Contributor: Giocoli, C.; Meneghetti, M.; Rasia, E.; Borgani, S.; Despali, G.; Lesci, G. F.; Marulli, F.; Moscardini, L.; Sereno, M.; Cui, W.; Knebe, A.; Yepes, G.; Castro, T.; Corasaniti, P.-S.; Pires, S.; Castignani, G.; Schrabback, T.; Pratt, G. W.; Le Brun, A. M. C.; Aghanim, N.; Amendola, L.; Auricchio, N.; Baldi, M.; Bodendorf, C.; [...]
  • imprint: EDP Sciences, 2024
  • Published in: Astronomy & Astrophysics
  • Language: Not determined
  • DOI: 10.1051/0004-6361/202346058
  • ISSN: 0004-6361; 1432-0746
  • Keywords: Space and Planetary Science ; Astronomy and Astrophysics
  • Origination:
  • Footnote:
  • Description: <jats:p>The photometric catalogue of galaxy clusters extracted from ESA <jats:italic>Euclid</jats:italic> data is expected to be very competitive for cosmological studies. Using dedicated hydrodynamical simulations, we present systematic analyses simulating the expected weak-lensing profiles from clusters in a variety of dynamic states and for a wide range of redshifts. In order to derive cluster masses, we use a model consistent with the implementation within the <jats:italic>Euclid</jats:italic> Consortium of the dedicated processing function and find that when we jointly model the mass and concentration parameter of the Navarro–Frenk–White halo profile, the weak-lensing masses tend to be biased low by 5–10% on average with respect to the true mass, up to <jats:italic>z</jats:italic> = 0.5. For a fixed value for the concentration <jats:italic>c</jats:italic><jats:sub>200</jats:sub> = 3, the mass bias is decreases to lower than 5%, up to <jats:italic>z</jats:italic> = 0.7, along with the relative uncertainty. Simulating the weak-lensing signal by projecting along the directions of the axes of the moment of inertia tensor ellipsoid, we find that orientation matters: when clusters are oriented along the major axis, the lensing signal is boosted, and the recovered weak-lensing mass is correspondingly overestimated. Typically, the weak-lensing mass bias of individual clusters is modulated by the weak-lensing signal-to-noise ratio, which is related to the redshift evolution of the number of galaxies used for weak-lensing measurements: the negative mass bias tends to be stronger toward higher redshifts. However, when we use a fixed value of the concentration parameter, the redshift evolution trend is reduced. These results provide a solid basis for the weak-lensing mass calibration required by the cosmological application of future cluster surveys from <jats:italic>Euclid</jats:italic> and <jats:italic>Rubin</jats:italic>.</jats:p>
  • Access State: Open Access