{
  "abstract": "We examine which prompt-emission observables of gamma-ray bursts (GRBs) carry identifiable redshift information in realistic structured-jet scenarios. By examining the photon-level Lorentz and cosmological transformations, we demonstrate any spectral observable reflecting the dominant-patch emission and any temporal observable reflecting the co-moving frame physics in the jet suffers from the same $z$-$θ_v$ degeneracy. The observable reflecting the absolute flux or count rate will also suffer from this $z$-$θ_v$ degeneracy in a different form. Due to the large variation of the intrinsic luminosity, combining the observables in the above-mentioned three classes cannot break this degeneracy. However, we demonstrate that two other classes of observables contain the potential to break this degeneracy: (i)~central engine-imprinted time scales, (ii)~emission from out of the dominant patch.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.00166",
  "author_total": 1,
  "authors": [
    {
      "name": "Shu-Xu Yi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6emqjznpg23wj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.00166",
  "fulltext_url": null,
  "id": "6emqjznpg23wj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.00166",
  "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/2609.00166",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6emqjznpg23wj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.00166",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.00166"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Redshift Identifiability from Gamma-Ray Burst Prompt Emission",
  "title_text": "Redshift Identifiability from Gamma-Ray Burst Prompt Emission",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/6emqjznpg23wj",
  "venue": "arXiv",
  "versions": []
}