Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters
Scaling relations between galaxy cluster properties are crucial for understanding cosmology and baryonic physics. Rigorous calibration of the M – L _X relation, employing weak lensing mass and consistent statistical methodology, is challenging due to heterogeneous cluster samples. The release of LEG...
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2025-01-01
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| author | I. Pederneiras A. Finoguenov E. Cypriano J. Comparat K. Kiiveri L. van Waerbeke R. Dupke |
| author_facet | I. Pederneiras A. Finoguenov E. Cypriano J. Comparat K. Kiiveri L. van Waerbeke R. Dupke |
| author_sort | I. Pederneiras |
| collection | DOAJ |
| description | Scaling relations between galaxy cluster properties are crucial for understanding cosmology and baryonic physics. Rigorous calibration of the M – L _X relation, employing weak lensing mass and consistent statistical methodology, is challenging due to heterogeneous cluster samples. The release of LEGACY imaging data introduced the possibility of unifying the cluster selection. We present the all-sky extension of the CODEX catalog based on LEGACY data and introduce a Bayesian framework for calibrating the X-ray luminosity–mass relation, derived for 100 clusters with weak lensing mass measurements. Using the X-ray luminosity estimates for those clusters from ROSAT All-Sky Survey (RASS) data, we perform a power-law fit to the M – L _X relation. Furthermore, taking advantage of the recently released eROSITA data (eRASS1), we assess the impact of point source contamination on cluster fluxes for 42 clusters in the eRASS1 footprint. The RASS fit yields a slope of β = 0.75 ± 0.09, 1.7 σ lower than the best self-similar prediction, with marginal evidence for the redshift evolution of the normalization ( γ = 0.65 ± 0.43). As for the eRASS1 analysis, the slope is substantially steeper, β = 1.11 ± 0.15, and in further agreement with the prediction of self-similarity. No additional evolution is also seen ( γ = 0.004 ± 0.790). While our results provide the practical means for cosmological studies of both RASS and eRASS data, the link to cluster physics is much cleaner after the cluster flux contamination is reduced. We also analyzed the impact of the selection function on calibration, finding that its full modeling is essential. |
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| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-2f7e6d5b4ea946c89f905d04caec879a2025-08-20T03:56:49ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01988223810.3847/1538-4357/ade793Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy ClustersI. Pederneiras0A. Finoguenov1https://orcid.org/0000-0002-4606-5403E. Cypriano2J. Comparat3https://orcid.org/0000-0001-9200-1497K. Kiiveri4L. van Waerbeke5https://orcid.org/0000-0002-2637-8728R. Dupke6Universidade de São Paulo , Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Rua do Matão, 1226, 05508-090 São Paulo, SP, Brazil ; isabelpederneiras@usp.brDepartment of Physics, University of Helsinki , P.O. Box 64, FI-00014 Helsinki, FinlandUniversidade de São Paulo , Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Rua do Matão, 1226, 05508-090 São Paulo, SP, Brazil ; isabelpederneiras@usp.brMax-Planck-Institut für extraterrestrische Physik , Giessenbachstrasse 1, 85748 Garching, GermanyDepartment of Physics, University of Helsinki , P.O. Box 64, FI-00014 Helsinki, FinlandDepartment of Physics and Astronomy, University of British Columbia , 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaObservatório Nacional , Rua General José Cristino, 77, São Cristóvão, 20921-400 Rio de Janeiro, RJ, Brazil; Department of Astronomy, University of Michigan , 311 West Hall, 1085 South University Avenue, Ann Arbor, MI 48109-1107, USA; Eureka Scientific , 2452 Delmer Street Suite 100, Oakland, CA 94602, USAScaling relations between galaxy cluster properties are crucial for understanding cosmology and baryonic physics. Rigorous calibration of the M – L _X relation, employing weak lensing mass and consistent statistical methodology, is challenging due to heterogeneous cluster samples. The release of LEGACY imaging data introduced the possibility of unifying the cluster selection. We present the all-sky extension of the CODEX catalog based on LEGACY data and introduce a Bayesian framework for calibrating the X-ray luminosity–mass relation, derived for 100 clusters with weak lensing mass measurements. Using the X-ray luminosity estimates for those clusters from ROSAT All-Sky Survey (RASS) data, we perform a power-law fit to the M – L _X relation. Furthermore, taking advantage of the recently released eROSITA data (eRASS1), we assess the impact of point source contamination on cluster fluxes for 42 clusters in the eRASS1 footprint. The RASS fit yields a slope of β = 0.75 ± 0.09, 1.7 σ lower than the best self-similar prediction, with marginal evidence for the redshift evolution of the normalization ( γ = 0.65 ± 0.43). As for the eRASS1 analysis, the slope is substantially steeper, β = 1.11 ± 0.15, and in further agreement with the prediction of self-similarity. No additional evolution is also seen ( γ = 0.004 ± 0.790). While our results provide the practical means for cosmological studies of both RASS and eRASS data, the link to cluster physics is much cleaner after the cluster flux contamination is reduced. We also analyzed the impact of the selection function on calibration, finding that its full modeling is essential.https://doi.org/10.3847/1538-4357/ade793Galaxy clustersGravitational lensingWeak gravitational lensingX-ray astronomy |
| spellingShingle | I. Pederneiras A. Finoguenov E. Cypriano J. Comparat K. Kiiveri L. van Waerbeke R. Dupke Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters The Astrophysical Journal Galaxy clusters Gravitational lensing Weak gravitational lensing X-ray astronomy |
| title | Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters |
| title_full | Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters |
| title_fullStr | Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters |
| title_full_unstemmed | Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters |
| title_short | Unified Weak Lensing Constraints on the Evolution of the Mass–X-Ray Luminosity Relation for Galaxy Clusters |
| title_sort | unified weak lensing constraints on the evolution of the mass x ray luminosity relation for galaxy clusters |
| topic | Galaxy clusters Gravitational lensing Weak gravitational lensing X-ray astronomy |
| url | https://doi.org/10.3847/1538-4357/ade793 |
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