{
  "abstract": "We present laboratory results on energy partitioning from supercritical, magnetized collisionless shock experiments ( M A ∼ 8, M ms ∼ 4). We report the first observation of fully developed laboratory shocks that evolve for more than seven upstream ion gyroperiods and have a downstream region that extends for more than four shocked ion gyroperiods. We use Thomson scattering to measure electron and ion temperatures, plasma density, and flow speeds. We directly measure a compression ratio of 3.6 ± 0.3, consistent with shock jump conditions. A foot ahead of the shock exhibits superadiabatic electron and ion heating. The downstream electron temperature exceeds adiabatic and collisional electron–ion heating by ≈30%, implying significant collisionless anomalous electron heating. We find a downstream electron–ion temperature ratio T e ( d ) / T i ( d ) = 0.8 ± 0.3 , consistent with spacecraft observations but outside the range predicted by theory and numerical simulations.",
  "abstract_shown": true,
  "affiliations": [
    "Princeton University, Princeton",
    "Lawrence Livermore National Laboratory",
    "Massachusetts Institute of Technology",
    "Department of Astro-fusion Plasma Physics (AFP)",
    "Princeton Plasma Physics Laboratory",
    "Geospace Physics Laboratory",
    "University of Rochester",
    "Kasetsart University",
    "University of Maryland",
    "University of California Los Angeles"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "V. Valenzuela-Villaseca",
      "orcid": "0000-0001-6772-1441"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "S. Totorica",
      "orcid": "0000-0002-7126-464X"
    },
    {
      "affs": [
        0,
        4
      ],
      "name": "J. Griff-McMahon",
      "orcid": "0000-0002-0774-0613"
    },
    {
      "affs": [
        5
      ],
      "name": "L.-J. Chen",
      "orcid": "0000-0002-4768-189X"
    },
    {
      "affs": [
        4
      ],
      "name": "S. Malko",
      "orcid": "0000-0003-1041-1092"
    },
    {
      "affs": [
        6
      ],
      "name": "P. V. Heuer",
      "orcid": "0000-0001-5050-6606"
    },
    {
      "affs": [
        7
      ],
      "name": "P. Pongkitiwanichakul",
      "orcid": "0000-0002-6609-1422"
    },
    {
      "affs": [
        0,
        4,
        8
      ],
      "name": "W. Fox",
      "orcid": "0000-0001-6289-858X"
    },
    {
      "affs": [
        9
      ],
      "name": "D. B. Schaeffer",
      "orcid": "0000-0003-1675-5910"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/44h5ayg6948p1.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea838",
  "fulltext_url": null,
  "id": "44h5ayg6948p1",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea838",
  "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|Solar and Space Plasma Dynamics"
    ]
  ],
  "openalex": "W4415089841",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea838/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/44h5ayg6948p1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea838",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea838"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Solar and Space Plasma Dynamics",
      "subfield": "stellar"
    }
  ],
  "title": "Laboratory Measurements of Energy Partitioning and Anomalous Electron Heating in Magnetized, Perpendicular Collisionless Shocks",
  "title_text": "Laboratory Measurements of Energy Partitioning and Anomalous Electron Heating in Magnetized, Perpendicular Collisionless Shocks",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/44h5ayg6948p1",
  "venue": "The Astrophysical Journal",
  "versions": []
}