{
  "annotation_id": "c3cb7c5f-3ba9-481d-ad0b-8a3b6987f9a2",
  "date_created": "2026-02-17T05:53:16.237000Z",
  "date_modified": "2026-02-17T05:53:16.237000Z",
  "file_hash": "abe746b521d61326d708807ba81cfe03297e9f1f9ef36739f1b6d34041e2aca1",
  "private": false,
  "record": {
    "abstract": "We present a spatially dependent framework for the existence and propagation of nonlinear kinetic Alfv\\\u0027en (KA) structures in the interstellar medium (ISM). Using a multi-component analytical model that incorporates the diffuse warm ionized medium together with localized H II regions, supernova remnants (SNR), and stellar-wind bubbles (SWB), we derive location-dependent coefficients governing KA dispersion and nonlinearity. The reductive perturbation method is applied to obtain Korteweg-de Vries (KdV) equations, enabling the characterization of solitons under realistic astrophysical conditions. Numerical analysis demonstrates how superthermality, plasma $\\beta$, temperature, and density gradients modulate soliton amplitude, width, and stability. Our results reveal distinct exclusion zones (EZs) for KA solitons in high-$\\beta$ HII regions and SWB/SNR interiors, as well as ultra low-$\\beta$ regions near central pulsar wind nebulae. While H II regions exhibit simple Gaussian-driven depletions, the complex ``hole-and-shell\" morphologies of SWBs and SNRs imprint sharp spatial variations and discontinuities on soliton properties. This study establishes a direct link between macroscopic ISM morphology, ion-kinetic scale dissipation, and the emergence of coherent Alfv\\\u0027enic activity, with implications for radio scattering, pulsar scintillation, and fine-scale signatures in astrophysical observations.",
    "arxiv_id": "2601.08313",
    "authors": [
      "Manpreet Singh",
      "Siming Liu",
      "N. S. Saini"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Interstellar Medium Modulation of Nonlinear Kinetic Alfv\\\u0027en Morphology in Structured Galactic Environments",
    "url": "https://arxiv.org/abs/2601.08313",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a2243dcb-6bbb-42cf-a50f-09e360c92dcf",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}