{
  "abstract": "We investigate the potential of decihertz gravitational-wave (GW) observations of compact-binary inspirals to probe atomic dark matter (aDM) and its interactions through an ultralight massive dark photon. We consider a scenario in which neutron stars accumulate DM charged under a dark Abelian massive vector mediator, leading to an additional long-range Yukawa interaction between compact objects and associated dipolar radiation. In this framework, the GW waveform acquires characteristic corrections parameterized by the Yukawa coupling strength $α$, the dipole-radiation parameter $γ$, and a parameter related to the mediator mass $μ$. These corrections include a leading $-1$ post-Newtonian dipole contribution and finite-mediator-mass effects. We relate the aDM corrections to existing parameterized tests of general relativity and perform Bayesian parameter-estimation analyses for simulated binary neutron star (BNS) and neutron star-black hole (NSBH) systems incorporating the modified binary inspiral in a proposed space-based decihertz detector, named IndIGO-D. For a GW170817-like BNS with nonzero aDM couplings chosen near current observational bounds, we find that the dark-photon rest energy can be inferred with a $90\\%$ credible uncertainty of $O(10^{-20})\\,\\mathrm{eV}$, conditional on a detectable dark-sector contribution. Analyses with weaker dark-sector interactions $(α\\lesssim O(10^{-8}))$ show that the mediator mass remains unconstrained when both the Yukawa coupling and dipole-radiation contribution are negligible, but can be measured even for a negligible Yukawa coupling if the dipole-radiation contribution is sufficiently strong. Our results demonstrate that future decihertz GW observatories can serve as powerful laboratories for testing dark-sector physics and probing dark matter interactions in compact binaries through precision GW measurements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.41473",
  "author_total": 4,
  "authors": [
    {
      "name": "Divya Tahelyani"
    },
    {
      "name": "Abhishek Sharma"
    },
    {
      "name": "Anand S. Sengupta"
    },
    {
      "name": "Arpan Bhattacharyya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/78jb25yr5kmtx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.41473",
  "fulltext_url": null,
  "id": "78jb25yr5kmtx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.41473",
  "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",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.41473",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/78jb25yr5kmtx.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.41473",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.41473"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing dark sector with decihertz gravitational wave observations of compact binary inspirals in IndIGO-D",
  "title_text": "Probing dark sector with decihertz gravitational wave observations of compact binary inspirals in IndIGO-D",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/78jb25yr5kmtx",
  "venue": "arXiv",
  "versions": []
}