{
  "abstract": "We use a stellar-mass complete sample of $\\sim 36{,}000$ galaxies from GAMA/eFEDS to test whether AGN activity depends on environment independent of stellar mass. To isolate this effect, we introduce $δ_{\\rm rank}$, a novel local overdensity metric defined within narrow stellar mass bins. Our main result is that X-ray-selected AGNs show a clear environmental trend, the AGN fraction rises from $\\sim 4\\%$ in low-density regions to $\\sim 6\\%$ in high-density regions, with a sharp transition at $δ_{\\rm rank} \\sim 0.4$. This environmental dependence is absent for WISE-selected and broad-line AGN, and Eddington ratios show no variation across environments. We also found that for galaxies with $\\mathrm{SFR} > 15\\,M_\\odot\\,\\mathrm{yr}^{-1}$, X-ray AGN fraction is approximately 5%, 60% and 20% in low, mid and high $δ_{\\rm rank}$ galaxies. We show that relationship between AGN fraction and SFR varies dramatically with both environment and selection method. We conclude that environment on scales of $\\sim 5h^{-1}\\,\\mathrm{Mpc}$ regulates X-ray AGN triggering efficiency.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16333",
  "author_total": 3,
  "authors": [
    {
      "name": "Navya Saraswat"
    },
    {
      "name": "Shadab Alam"
    },
    {
      "name": "Subhabrata Majumdar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/918v2vccndtff.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16333",
  "fulltext_url": null,
  "id": "918v2vccndtff",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16333",
  "language": null,
  "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.GA"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7213438623",
  "pdf_url": "https://arxiv.org/pdf/2609.16333",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/918v2vccndtff.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16333",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16333"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Disentangling Stellar Mass and Environmental Effects on eROSITA AGN Activity using multi-wavelength data from GAMA, WISE, GALEX, and DESI Legacy Survey",
  "title_text": "Disentangling Stellar Mass and Environmental Effects on eROSITA AGN Activity using multi-wavelength data from GAMA, WISE, GALEX, and DESI Legacy Survey",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/918v2vccndtff",
  "venue": "arXiv",
  "versions": []
}