{
  "abstract": "Large primordial curvature and tensor perturbations on small scales can generate second-order tensor-scalar induced gravitational waves (TSIGWs) through scalar-scalar, tensor-scalar, and tensor-tensor source terms. TSIGWs are recognized as one of the principal contributors to the stochastic gravitational wave background (SGWB) observations. We explore the energy density spectrum of second-order TSIGWs in the presence of non-Gaussian primordial curvature perturbations. Furthermore, we present the first calculation of the anisotropic angular power spectrum associated with second-order TSIGWs, which provides a promising tool to discriminate them from other SGWB sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01193",
  "author_total": 3,
  "authors": [
    {
      "name": "Peng-Yu Wu"
    },
    {
      "name": "Di Wu"
    },
    {
      "name": "Jing-Zhi Zhou"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2caq4crk9eee6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01193",
  "fulltext_url": null,
  "id": "2caq4crk9eee6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01193",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7206149656",
  "pdf_url": "https://arxiv.org/pdf/2609.01193",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2caq4crk9eee6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.01193",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01193"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Angular power spectrum of induced gravitational waves: breaking model and parameter degeneracies in PTA observations",
  "title_text": "Angular power spectrum of induced gravitational waves: breaking model and parameter degeneracies in PTA observations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/2caq4crk9eee6",
  "venue": "arXiv",
  "versions": []
}