{
  "abstract": "We present the cross-calibration of the eROSITA and XMM telescopes, using galaxy clusters detected by redMaPPer from the first three years of Dark Energy Survey observations (DESY3RM). We use the X-ray: Generate and Analyse (XGA) Python module to measure eROSITA properties, and validate our methodology using a deep pointed eROSITA CAL-PV observation of A3158, and a sample of 119 clusters from the expanded HIgh FLux Galaxy Cluster Sample (eeHiFLUGCS). Next, we construct a sample of DESY3RM clusters matched to XMM observations analysed by the XMM Cluster Survey (XCS), and to clusters in the first release of the eROSITA All-Sky Survey (eRASS1). This produced a sample of 114 DESY3RM clusters with both XMM and eROSITA detections. Our resulting X-ray temperatures determined from eROSITA were compared to eRASS1 catalogue values, showing consistency between the two analyses. Comparisons between XMM and eROSITA temperatures reveal a systematic offset, with XMM temperatures 28$\\pm$7% higher on average. Finally, we fit $L_{\\rm X,soft}$-$λ_{\\rm RM}$ and $T_{\\rm X}$-$λ_{\\rm RM}$ scaling relations for both eROSITA and XMM using the same cluster sample, finding minimal differences in the $L_{\\rm X,soft}$-$λ_{\\rm RM}$ relation but a clear normalisation offset in the $T_{\\rm X}$-$λ_{\\rm RM}$ relation, particularly for the highest richness systems. This study will enable future work combining eROSITA and XMM observatories for DESY3RM clusters.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.16741",
  "author_total": 12,
  "authors": [
    {
      "name": "J. E. Pilling"
    },
    {
      "name": "D. J. Turner"
    },
    {
      "name": "P. A. Giles"
    },
    {
      "name": "A. K. Romer"
    },
    {
      "name": "R. Wilkinson"
    },
    {
      "name": "P. J. Rooney"
    },
    {
      "name": "M. Hilton"
    },
    {
      "name": "S. Bhargava"
    },
    {
      "name": "J. Hall"
    },
    {
      "name": "R. Wang"
    },
    {
      "name": "A. Abdulghafour"
    },
    {
      "name": "B. J. Maughan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f4rkpvx4dzkzc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16741",
  "fulltext_url": null,
  "id": "f4rkpvx4dzkzc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.16741",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7221793850",
  "pdf_url": "https://arxiv.org/pdf/2610.16741",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f4rkpvx4dzkzc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16741",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16741"
    },
    {
      "first_seen": "2026-11-04T12:20:53Z",
      "native_id": "hal-05851455",
      "source": "hal",
      "url": "https://hal.science/hal-05851455v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "The XMM Cluster Survey: Cross-Calibration of eROSITA and XMM using Dark Energy Survey Y3 Galaxy Clusters",
  "title_text": "The XMM Cluster Survey: Cross-Calibration of eROSITA and XMM using Dark Energy Survey Y3 Galaxy Clusters",
  "type": "preprint",
  "updated_at": "2026-11-06T12:20:44Z",
  "url": "https://research.draconitic.com/paper/f4rkpvx4dzkzc",
  "venue": "arXiv",
  "versions": []
}