{
  "abstract": "FRB 190520B is a repeating fast radio burst source whose large dispersion measure (DM) and temporal broadening suggest a dense and evolving local environment. In this work, we test the possibility that FRB 190520B originates from the core-collapse of a massive star so that its central engine is embedded in a supernova remnant (SNR) expanding into a wind environment, whose evolution is described by the self-similar solution. We use the observed DM and scattering timescale of FRB 190520B to constrain the physical parameters of its surrounding SNR and host-galaxy DM. Twenty typical cases are considered, arising from four ejecta profiles and five scattering prescriptions. It is found that only 6 cases are retained and provide acceptable fits. All retained cases have a shallow ejecta profile and a young source age of $t_0=79.8$--$169.8~{\\rm yr}$. The ejecta mass is inferred to be large for all six cases, while the kinetic energy and mass-loss rate span a wide range. The secular DM evolution is reproduced better than the detailed scattering evolution. The up-drift behavior of the scattering residual suggests an additional component or more complicated structures inside the SNR. All retained cases are self-consistent within the adopted scattering theory and the circum-burst medium becomes transparent for GHz bursts before the inferred source ages.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.26553",
  "author_total": 7,
  "authors": [
    {
      "name": "Jia-Peng Wei"
    },
    {
      "name": "Chen Deng"
    },
    {
      "name": "Gwenael Giacinti"
    },
    {
      "name": "Ze-Cheng Zou"
    },
    {
      "name": "Chen-Ran Hu"
    },
    {
      "name": "Yong-Feng Huang"
    },
    {
      "name": "Jin-Jun Geng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f2creta4swqx1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.26553",
  "fulltext_url": null,
  "id": "f2creta4swqx1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.26553",
  "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.HE"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.26553",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f2creta4swqx1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2605.26553",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.26553"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Constraining the Supernova Remnant Environment of FRB 190520B with Dispersion Measure and Scattering Timescale",
  "title_text": "Constraining the Supernova Remnant Environment of FRB 190520B with Dispersion Measure and Scattering Timescale",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/f2creta4swqx1",
  "venue": "arXiv",
  "versions": []
}