{
  "annotation_id": "86ecb85e-7178-4ce5-a310-53e97a09b9a8",
  "date_created": "2026-03-02T18:00:35.848000Z",
  "date_modified": "2026-03-02T18:00:35.848000Z",
  "file_hash": "8f893034db168b8db66ecacfdcad87fdda5f846a2e4de14eb3146ee6082baea1",
  "private": false,
  "record": {
    "abstract": "Gravitational radiation is an elusive form of radiation predicted by general\nrelativity, it is the subject of intense theoretical and experimental research\nat the limit of the sensitivity of today\u0027s instrumentation. In spite of the\nfact that no direct evidence of this radiation now exist, observed\nastrophysical phenomena have given convincing proofs of its existence. Theories\npredict that gravitational radiation may also be employed for propulsion,\nmoreover the nonlinear behaviour of spacetime may permit the generation of\nspacetime singularities with colliding beams of gravitational radiation, this\nphenomenon could become a form of propellantless propulsion. Both applications\nwould require gravitational wave generators with high power and appropriate\noptical properties. Among the proposed techniques that could be applicable to\nthe production of gravitational waves, a promising one is the possible emission\nof gravitons by quantum systems. A hypothesis describing the production of\ngravitons in s-wave/d-wave superconductor junction is presented.",
    "arxiv_id": "physics/0110042",
    "authors": [
      "Giorgio Fontana"
    ],
    "categories": [
      "physics.space-ph"
    ],
    "doi": "10.1063/1.1290910",
    "title": "Gravitational Radiation and its Application to Space Travel, principles   and required scientific developments",
    "url": "https://arxiv.org/abs/physics/0110042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9a6cc238-50b2-459d-a1b2-743272ce47ba",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}