{
  "abstract": "The centers of galaxies harbor the densest stellar environments, where a massive black hole (MBH) accelerates stars to such high velocities that direct collisions can result in high-energetic phenomena, such as gravitational wave sources, kilonovae, and supernova-like transients. These collisions can reshape the cluster's density profile and release gas that can be subsequently accreted by the MBH. However, the evolving rates of such phenomena from self-consistent dynamics around mass-growing MBHs remain largely unexplored. In this work, we simulate nuclear star clusters (NSCs) across a range of masses and density profiles by employing the GNC Monte Carlo code, that self-consistently models stellar dynamics and the subsequent accretion of released gas. We find that stellar collisions flatten the density cusp in the innermost regions ($r \\lesssim 10^{-3}-10^{-2}$ pc) within $\\sim 0.1-1$ Gyr. While high initial collision rates in steep cusps quickly decline due to stellar depletion, the interplay between collisions and MBH growth is important only in massive NSCs ($M_\\star \\sim 10^9 M_\\odot$). As MBH grows, increased stellar velocities shift the balance toward destructive collisions of which relative velocities can be $\\gtrsim 2500 {\\rm \\,km\\,s^{-1}}$. Consequently, present-day destructive collision rates in massive clusters remain high ($10^{-4}\\sim 10^{-3}{\\rm yr}^{-1}$), whereas they are smaller in Milky Way-like NSCs or negligible in smaller NSCs. Our results highlight a crucial synergy between stellar dynamics and MBH growth, identifying massive galaxies as prime targets for observing transients from destructive stellar collisions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29136",
  "author_total": 2,
  "authors": [
    {
      "name": "Fupeng Zhang"
    },
    {
      "name": "Pau Amaro Seoane"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ef1fv9hf8tf95.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29136",
  "fulltext_url": null,
  "id": "ef1fv9hf8tf95",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29136",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7214388495",
  "pdf_url": "https://arxiv.org/pdf/2609.29136",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ef1fv9hf8tf95.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:11Z",
      "native_id": "2609.29136",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29136"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Stellar Collisions from Self-consistent Stellar Dynamics Around Growing Supermassive black Holes",
  "title_text": "Stellar Collisions from Self-consistent Stellar Dynamics Around Growing Supermassive black Holes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:11Z",
  "url": "https://research.draconitic.com/paper/ef1fv9hf8tf95",
  "venue": "arXiv",
  "versions": []
}