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    "story_id": "mp-2026-08-20-014",
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    "headline": "A Third Supernova May Carry a Binary Beat",
    "slug": "a-third-supernova-may-carry-a-binary-beat",
    "dek": "A 34-event search recovered two known periodic light curves and added SN 2020sgf as a promising candidate.",
    "summary": "A 34-event search recovered two known periodic light curves and added SN 2020sgf as a promising candidate.",
    "body_text": "A statistically controlled search of Zwicky Transient Facility photometry recovered periodic undulations in SN 2022jli and SN 2022esa and identified SN 2020sgf as another candidate. Injection tests quantify what periods and amplitudes the survey could recover, and population models with roughly 20 percent intrinsic periodicity remain consistent with the detections. The new object is a candidate, not a confirmed binary mechanism.",
    "why_it_matters": "A 34-event search recovered two known periodic light curves and added SN 2020sgf as a promising candidate.",
    "limitations": [
      "Injection tests quantify what periods and amplitudes the survey could recover, and population models with roughly 20 percent intrinsic periodicity remain consistent with the detections.",
      "The new object is a candidate, not a confirmed binary mechanism."
    ],
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    "first_published_at": "2026-08-20T09:00:00.000-04:00",
    "modified_at": "2026-08-20T09:00:00.000-04:00",
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        "text": "A 34-event search recovered two known periodic light curves and added SN 2020sgf as a promising candidate.",
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        "qualification": "Injection tests quantify what periods and amplitudes the survey could recover, and population models with roughly 20 percent intrinsic periodicity remain consistent with the detections."
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    "source_ids": [
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    "tags": [
      "supernovae",
      "binary stars",
      "light curves"
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  "sources": [
    {
      "source_id": "source-2026-08-20-014",
      "title": "arXiv preprint 2608.18207",
      "publisher": "arXiv",
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      "published_at": "2026-08-17T20:00:00.000-04:00",
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    "name": "The Machine Press",
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  "cite_this_report": {
    "title": "A Third Supernova May Carry a Binary Beat",
    "publisher": "The Machine Press",
    "published_at": "2026-08-20T09:00:00.000-04:00",
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