{
  "annotation_id": "034a179d-50f4-4aea-8142-76a11b41f1be",
  "date_created": "2026-03-02T18:00:53.687000Z",
  "date_modified": "2026-03-02T18:00:53.687000Z",
  "file_hash": "bed2948856add59fbaafdabc2f0eca4789e718bbae0fb28c180e0996361cec92",
  "private": false,
  "record": {
    "abstract": "A one-dimensional electromagnetic problem of Sommerfeld precursor evolution,\nresulting from a finite rise-time signal excitation in a dispersive Lorentz\nmedium is considered. The effect of the initial signal rate of growth as well\nas of the medium dumping on the precursor shape and its magnitude is discussed.\nThe analysis applied is based on an approach employing uniform asymptotic\nexpansions. In addition, new approximate formulas are given for the location of\nthe distant saddle points which affect local frequency and dumping of the\nprecursor. The results obtained are illustrated numerically and compared with\nthe results known from the literature.",
    "arxiv_id": "physics/0412065",
    "authors": [
      "Adam Ciarkowski"
    ],
    "categories": [
      "physics.optics"
    ],
    "journal_ref": "Journal of Technical Physics, 43, 2, 187-203 (2002)",
    "title": "On Sommerfeld precursor in a Lorentz medium",
    "url": "https://arxiv.org/abs/physics/0412065"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9238a721-2556-4038-b252-c058500d937c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}