{
  "abstract": "We present the X-ray surface brightness maps of the jet from the quasar PKS 0637−752, using two epochs of archival Chandra observations (1999 and 2017). We present, for the first time, a model of the faint inner jet extending from 3 . ″ 4 to 7″ from the core, interpreting its X-ray emission as inverse Compton (CMB) scattering of cosmic microwave background photons by the synchrotron-emitting relativistic electrons. The inner jet contrasts with the bright outer part of the jet, dominated by several discrete knots for which upper limits to the Fermi gamma-ray flux rule out the CMB mechanism. It is the first detailed CMB model published for this inner jet. We examine three physically motivated scenarios, distinguished by the high-energy cutoff of the electron distribution, that can account for the observed radio, millimeter/submillimeter, and X-ray emission while remaining consistent with optical and gamma-ray upper limits. We also report for the first time X-rays from the radio lobe at the end of the receding jet.",
  "abstract_shown": true,
  "affiliations": [
    "Center for Astrophysics ∣ Harvard & Smithsonian",
    "University of Bristol",
    "National Centre for Radio Astrophysics"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jaya Maithil",
      "orcid": "0000-0002-4423-4584"
    },
    {
      "affs": [
        0
      ],
      "name": "Daniel A. Schwartz",
      "orcid": "0000-0001-8252-4753"
    },
    {
      "affs": [
        0
      ],
      "name": "Aneta Siemiginowska",
      "orcid": "0000-0002-0905-7375"
    },
    {
      "affs": [
        1
      ],
      "name": "Diana M. Worrall",
      "orcid": "0000-0002-1516-0336"
    },
    {
      "affs": [
        2
      ],
      "name": "Preeti Kharb",
      "orcid": "0000-0003-3203-1613"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f4q51drb7jpz7.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea562",
  "fulltext_url": null,
  "id": "f4q51drb7jpz7",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea562",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7223156031",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea562/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/f4q51drb7jpz7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea562",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea562"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Chandra X-Ray Imaging and an Inverse Compton/Cosmic Microwave Background Model for the Inner Jet of PKS 0637–752",
  "title_text": "Chandra X-Ray Imaging and an Inverse Compton/Cosmic Microwave Background Model for the Inner Jet of PKS 0637–752",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/f4q51drb7jpz7",
  "venue": "The Astrophysical Journal",
  "versions": []
}