{
  "annotation_id": "82acea2f-9869-4710-883f-9616a04f7a97",
  "date_created": "2026-03-02T18:01:07.907000Z",
  "date_modified": "2026-03-02T18:01:07.907000Z",
  "file_hash": "8d55374caa6400ca01e92d18daedd14c80aa56afa06816689e17ce024f6d3902",
  "private": false,
  "record": {
    "abstract": "Observations and simulations show that Mars\u0027 atmosphere has large seasonal\nvariations. Total atmospheric density can have an order of magnitude\nlatitudinal variation at exobase heights. By numerical simulations we show that\nthese latitude variations in exobase parameters induce asymmetries in the\nhydrogen exosphere that propagate to large distances from the planet. We show\nthat these asymmetries in the exosphere produce asymmetries in the fluxes of\nenergetic neutral atoms (ENAs) and soft X-rays produced by charge exchange\nbetween the solar wind and exospheric hydrogen. This could be an explanation\nfor asymmetries that have been observed in ENA and X-ray fluxes at Mars.",
    "arxiv_id": "physics/0604042",
    "authors": [
      "Mats Holmstr\u00f6m"
    ],
    "categories": [
      "physics.space-ph"
    ],
    "doi": "10.1007/s11214-006-9036-7",
    "journal_ref": "Space Science Reviews, 126(1-4):435-445, 2006.",
    "title": "Asymmetries in Mars\u0027 Exosphere: Implications for X-ray and ENA Imaging",
    "url": "https://arxiv.org/abs/physics/0604042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8555bbac-5b25-41bd-aa9e-117d4ea40099",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}