{
  "annotation_id": "07ac9b8b-796e-49e9-aa8a-e4a0f82cfc1a",
  "date_created": "2026-03-02T18:01:03.348000Z",
  "date_modified": "2026-03-02T18:01:03.348000Z",
  "file_hash": "6971acd781119ef0736a10ecb34025a2fa71a687ec3796cdd286409d1edc6cf9",
  "private": false,
  "record": {
    "abstract": "A meteoroid penetrating the Earth\u0027s atmosphere leaves behind a trail of dense\nplasma in the E-region ionosphere, a region where electrons are strongly\nmagnetized while ions are demagnetized due to their frequent collisions with\nneutrals. While radar measurements of meteor trail evolution have been\ncollected and used to infer meteor and atmospheric properties since the 1950s,\nno accurate quantitative model of trail fields and diffusion exists. This paper\ndescribes a theory and simulations of trail plasma physics which applies to the\nmajority of small meteors. Unlike earlier papers, our theory assumes a\nsignificant angle between the geomagnetic field and the plasma trail and\nincludes the important interaction between the trail and the background\nionospheric plasma. This study provides quantitative knowledge of the spatial\ndistribution and dynamics of the plasma density and electric field. This should\nenable meteor and atmospheric researchers to more accurately interpret radar\nobservations of specular and non-specular meteor echoes.",
    "arxiv_id": "physics/0512103",
    "authors": [
      "Y. S. Dimant",
      "M. M. Oppenheim"
    ],
    "categories": [
      "physics.plasm-ph",
      "physics.geo-ph"
    ],
    "title": "Meteor generated plasma columns in E-region ionosphere: fields and   diffusion",
    "url": "https://arxiv.org/abs/physics/0512103"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ba9347fa-e828-442d-a6cc-e66dda14a215",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}