{
  "abstract": "The mechanism responsible for the high-energy emission observed in kiloparsec-scale jets across cosmic time remains poorly understood. The relativistic jet associated with the z=6.1 AGN PSO J030947.49+271757.31 is the highest-redshift large-scale jet currently resolved in X-rays, providing a unique opportunity to study these structures. We present new Chandra observations, combined with archival data, for a total exposure of 360 ks. The increased exposure allowed us to resolve the extended X-ray emission into two distinct, slightly resolved components and perform spatially resolved spectral analyses. The extended emission has a photon index of Gamma = 2.25 (+0.45, -0.44), steeper than that of the core (Gamma = 1.86 +/- 0.09), and an extended-to-core luminosity ratio of 18%. Simulations using the Chandra image as input show that an AXIS-like mission could increase the detected photon statistics by a factor of approximately 17. We resolve the kiloparsec-scale jet into two main components and constrain its spectral properties. This is the most distant and one of the most X-ray-luminous large-scale jets currently known. Future X-ray missions with arcsecond-scale angular resolution could enable more detailed studies of such systems and reveal a population of fainter high-redshift jets beyond Chandra's reach.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30259",
  "author_total": 10,
  "authors": [
    {
      "name": "Fabio A. Meanti"
    },
    {
      "name": "Luca Ighina"
    },
    {
      "name": "Alberto Moretti"
    },
    {
      "name": "Kyra Bettwy"
    },
    {
      "name": "Alessandro Caccianiga"
    },
    {
      "name": "Thomas Connor"
    },
    {
      "name": "Fabrizio Tavecchio"
    },
    {
      "name": "Silvia Belladitta"
    },
    {
      "name": "Emmanuel K. Bempong-Manful"
    },
    {
      "name": "Cristiana Spingola"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e41b2ck7hx2fc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30259",
  "fulltext_url": null,
  "id": "e41b2ck7hx2fc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30259",
  "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.GA"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.30259",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e41b2ck7hx2fc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.30259",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30259"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "The deepest X-ray view of a kiloparsec scale jet at z=6.1",
  "title_text": "The deepest X-ray view of a kiloparsec scale jet at z=6.1",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/e41b2ck7hx2fc",
  "venue": "arXiv",
  "versions": []
}