{
  "abstract": "We investigate the impact of a dark matter density spike surrounding the Milky Way's supermassive black hole (SMBH) on the detectability of Singlino-dominated neutralino dark matter within the Next-to-Minimal Supersymmetric Standard Model (NMSSM). Similar density enhancements, or mini-spikes, around stellar-mass black holes (sBHs), have also been considered. Such a dark matter (DM) candidate typically produces weak indirect detection signals in conventional dark matter halos. Additionally, a Singlino-like lightest supersymmetric particle (LSP) is very difficult to probe at the LHC or through direct DM searches. Furthermore, a Singlino-like LSP with an almost degenerate Higgsino NLSP can produce an observable inelastic DD signal and is compatible with the anomalous high-recoil event recently reported by the LZ collaboration. Keeping these in consideration, we examine the prospects for detecting these sub-TeV dark matter scenarios through gamma-ray observations of the regions surrounding the SMBH Sgr A$^\\ast$ and the sBH in the low-mass X-ray binary XTE J1118+480.",
  "abstract_shown": true,
  "affiliations": [
    "School of Physical Sciences , Indian Association for the Cultivation of Science , Jadavpur , Kolkata , 700 032 , India",
    "Homi Bhabha National Institute , Training School Complex , Anushakti Nagar , Mumbai 400 094 , India",
    "Institute of Physics , Sachivalaya Marg , Bhubaneswar , 751 005 , India",
    "Department of Physics , Acharya Institute of Technology , Bengaluru , 560 107 , Karnataka , India"
  ],
  "article_type": null,
  "arxiv": "2609.02994",
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Utpal Chattopadhyay",
      "orcid": "0000-0002-6824-9465"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Debottam Das"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Rahul Puri"
    },
    {
      "affs": [
        3
      ],
      "name": "Joydeep Roy"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9r3r2db0ej094.bib",
  "cited_by": 25,
  "doi": "10.48550/arxiv.2609.02994",
  "fulltext_url": null,
  "id": "9r3r2db0ej094",
  "issns": [
    "2331-8422"
  ],
  "landing_url": "https://arxiv.org/abs/2609.02994",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Dark Matter and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7208748891",
  "pdf_url": "https://arxiv.org/pdf/2609.02994",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": "Cornell University",
  "ris": "https://research.draconitic.com/paper/9r3r2db0ej094.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:52Z",
      "native_id": "2609.02994",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.02994"
    },
    {
      "first_seen": "2026-11-07T13:20:45Z",
      "native_id": "W7208748891",
      "source": "openalex",
      "url": "https://arxiv.org/abs/2609.02994"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Sub-TeV Singlino Dark Matter in light from Sagittarius A$^\\ast$ and LUX-ZEPLIN Nuclear-Recoil Event",
  "title_text": "Sub-TeV Singlino Dark Matter in light from Sagittarius A^∗ and LUX-ZEPLIN Nuclear-Recoil Event",
  "type": "preprint",
  "updated_at": "2026-11-08T13:20:38Z",
  "url": "https://research.draconitic.com/paper/9r3r2db0ej094",
  "venue": "arXiv",
  "versions": []
}