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dc.contributor.author
Meneghetti, Massimo
dc.contributor.author
Ragagnin, Antonio
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Borgani, Stefano
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Calura, Francesco
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Despali, Giulia
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Giocoli, Carlo
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Granato, Gian Luigi
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Grillo, Claudio
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Moscardini, Lauro
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Rasia, Elena
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Rosati, Piero
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Angora, Giuseppe
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Bassini, Luigi
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Bergamini, Pietro
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Caminha, Gabriel B.
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Granata, Giovanni
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Mercurio, Amata
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Metcalf, Robert Benton
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Natarajan, Priyamvada
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Nonino, Mario
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Pignataro, Giada Venusta
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Ragone Figueroa, Cinthia Judith
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Vanzella, Eros
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Acebron, Ana
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Dolag, Klaus
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Murante, Giuseppe
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Taffoni, Giuliano
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Tornatore, Luca
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Tortorelli, Luca
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Valentini, Milena
dc.date.available
2023-07-11T13:35:27Z
dc.date.issued
2022-12
dc.identifier.citation
Meneghetti, Massimo; Ragagnin, Antonio; Borgani, Stefano; Calura, Francesco; Despali, Giulia; et al.; The probability of galaxy- galaxy strong lensing events in hydrodynamical simulations of galaxy clusters; EDP Sciences; Astronomy and Astrophysics; 668; A188; 12-2022; 1-14
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/203218
dc.description.abstract
Context. An excess of galaxy galaxy strong lensing (GGSL) in galaxy clusters compared to expectations from the cold-dark-matter (CDM) cosmological model has recently been reported. Theoretical estimates of the GGSL probability are based on the analysis of numerical hydrodynamical simulations in CDM cosmology. Aims. We quantify the impact of the numerical resolution and active galactic nucleus (AGN) feedback scheme adopted in cosmological simulations on the predicted GGSL probability, and determine if varying these simulation properties can alleviate the gap with observations. Methods. We analyze cluster-size halos (M200 > 5 × 1014 M ) simulated with different mass and force resolutions and implementing several independent AGN feedback schemes. Our analysis focuses on galaxies with Einstein radii in the range 000 :5 = E = 300. Results. We find that improving the mass resolution by factors of 10 and 25, while using the same galaxy formation model that includes AGN feedback, does not affect the GGSL probability. We find similar results regarding the choice of gravitational softening. On the contrary, adopting an AGN feedback scheme that is less efficient at suppressing gas cooling and star formation leads to an increase in the GGSL probability by a factor of between 3 and 6. However, we notice that such simulations form overly massive galaxies whose contribution to the lensing cross section would be significant but that their Einstein radii are too large to be consistent with the observations. The primary contributors to the observed GGSL cross sections are galaxies with smaller masses that are compact enough to become critical for lensing. The population with these required characteristics appears to be absent from simulations. Conclusion. Based on these results, we reaffirm the tension between observations of GGSL and theoretical expectations in the framework of the ?CDM cosmological model. The GGSL probability is sensitive to the galaxy formation model implemented in the simulations. Still, all the tested models have difficulty simultaneously reproducing the stellar mass function and the internal structure of galaxies.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
DARK MATTER
dc.subject
GALAXIES: CLUSTERS: GENERAL
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GRAVITATIONAL LENSING: STRONG
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
The probability of galaxy- galaxy strong lensing events in hydrodynamical simulations of galaxy clusters
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-06T11:32:26Z
dc.journal.volume
668
dc.journal.number
A188
dc.journal.pagination
1-14
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Meneghetti, Massimo. Istituto Nazionale di Fisica Nucleare; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Ragagnin, Antonio. Universidad de Bologna; Italia. Institute For Fundamental Physics Of The Universe; Italia. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Borgani, Stefano. Università degli Studi di Trieste; Italia. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Calura, Francesco. Istituto Nazionale di Astrofisica; Italia
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Fil: Despali, Giulia. Ruprecht Karls Universitat Heidelberg; Alemania
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Fil: Giocoli, Carlo. Universidad de Bologna; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Granato, Gian Luigi. Institute For Fundamental Physics Of The Universe; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
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Fil: Grillo, Claudio. Università degli Studi di Milano; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Moscardini, Lauro. Universidad de Bologna; Italia. Istituto Nazionale di Fisica Nucleare; Italia. Istituto Nazionale di Astrofisica; Italia
dc.description.fil
Fil: Rasia, Elena. Institute For Fundamental Physics Of The Universe; Italia. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Rosati, Piero. Università di Ferrara; Italia
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Fil: Angora, Giuseppe. Università di Ferrara; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Bassini, Luigi. Universitat Zurich; Suiza
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Fil: Bergamini, Pietro. Università degli Studi di Milano; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Caminha, Gabriel B.. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
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Fil: Granata, Giovanni. Università degli Studi di Milano; Italia
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Fil: Mercurio, Amata. Istituto Nazionale di Astrofisica; Italia
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Fil: Metcalf, Robert Benton. Universidad de Bologna; Italia. Istituto Nazionale di Astrofisica; Italia
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Fil: Natarajan, Priyamvada. University of Yale; Estados Unidos
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Fil: Nonino, Mario. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Pignataro, Giada Venusta. Istituto Di Radioastronomia; Italia. Universidad de Bologna; Italia
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Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Istituto Nazionale di Fisica Nucleare; Italia. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
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Fil: Vanzella, Eros. Istituto Nazionale di Astrofisica; Italia
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Fil: Acebron, Ana. Università degli Studi di Milano; Italia
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Fil: Dolag, Klaus. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. Ludwig Maximilians Universitat; Alemania
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Fil: Murante, Giuseppe. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Taffoni, Giuliano. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Tornatore, Luca. Istituto Nazionale di Fisica Nucleare; Italia
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Fil: Tortorelli, Luca. Ludwig Maximilians Universitat; Alemania
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Fil: Valentini, Milena. Ludwig Maximilians Universitat; Alemania
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/202243779
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2022/12/aa43779-22/aa43779-22.html
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