{
  "abstract": "A previously developed analytical treatment of the larger-angle emission (LAE) model for gamma-ray bursts (GRBs) and afterglows is further developed to include the effect of a fixed magnetic field orientation. This model has the uncanny ability to unify the prompt and delayed emissions and to account easily for the entire diversity of Swift X-ray light curves. The LAE model is applied to seven GRBs (060526, 060614, 060714, 060729, 061007, 061121, 100902, 130427A) with well-sampled 0.3 keV/10 keV Swift X-Ray Telescope (XRT) and optical light curves, displaying well-monitored four phases (GRB, tail, plateau, post-plateau), to illustrate its power and limitations and to determine its five fundamental parameters. Tight constraints are not always obtained from fitting even the best light curves available. The one-and-only core parameter Γ c θ c is determined by the GRB and afterglow temporal milestones (i.e., by the dynamical range of the tail and plateau), and may have a universal value around 3.0, with narrower cores (smaller θ c ) being more relativistic (higher Γ c ). Flat plateaus require an envelope angular structure close to Γ( θ ) ∼ θ ⁻² . A magnetic field parallel to the direction of the relativistic flow yields more curved prompt/GRB and delayed/afterglow light curves than a perpendicular or isotropic field, with curvature Δ α defined as the difference between the flux asymptotic power-law decay indices at the beginning and end of each phase. The curvature Δ α grb of the GRB light curves arising from the uniform core is set only by the B -field orientation, and a perpendicular or isotropic B field is equally often found, but a parallel field is never identified for the core. The curvature Δ α aglow of the afterglow light curves from the power-law envelope depends on B and three other parameters. The envelope B -field orientation can be identified for only three afterglows, where a parallel B is found.",
  "abstract_shown": true,
  "affiliations": [
    "Intelligence and Space Research"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "A. Panaitescu",
      "orcid": "0000-0002-3253-7596"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3956xm99tkevk.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea144",
  "fulltext_url": null,
  "id": "3956xm99tkevk",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea144",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Gamma-ray bursts and supernovae"
    ]
  ],
  "openalex": "W7223130284",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea144/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/3956xm99tkevk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea144",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea144"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Gamma-ray bursts and supernovae",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Determination of the Angular Distributions of Dynamical and Emission Parameters of Gamma-Ray Burst Relativistic Outflows",
  "title_text": "Determination of the Angular Distributions of Dynamical and Emission Parameters of Gamma-Ray Burst Relativistic Outflows",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/3956xm99tkevk",
  "venue": "The Astrophysical Journal",
  "versions": []
}