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    "title": "SARAS 3 tests a reported cosmic-dawn absorption profile",
    "summary": "The SARAS 3 radiometer measured a sky-averaged radio spectrum and compared it with the absorption profile previously reported by EDGES. With the paper’s foreground and calibration model, its fit disfavoured the earlier best-fitting profile at 95.3% confidence; the authors also tested the wider set of profiles allowed by EDGES.",
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    "area": "Observational cosmology",
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    "year": 2021,
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        "title": "On the detection of a cosmic dawn signal in the radio background",
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          "name": "Mayuri Sathyanarayana Rao",
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      "scope": {
        "description": "This is an independent observational challenge to a specific earlier best-fit profile, not a detection of the cosmic-dawn 21-cm signal or proof that every possible 21-cm absorption profile is absent. The reported 95.3% applies to one best-fit template; the paper gives 90.4% for the weighted set of allowed profiles. Results rely on the selected 55–85 MHz science band, sixth-order foreground model, assumed systematic-error treatment and finite sensitivity. The cause of the EDGES spectral feature is not independently identified. The EDGES report is recorded separately with its own authors.",
        "domain": "Observational cosmology"
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      "statement": "# SARAS 3 tests a reported cosmic-dawn absorption profile\n\nThe SARAS 3 radiometer measured a sky-averaged radio spectrum and compared it with the absorption profile previously reported by EDGES. With the paper’s foreground and calibration model, its fit disfavoured the earlier best-fitting profile at 95.3% confidence; the authors also tested the wider set of profiles allowed by EDGES.\n\n## Scientific scope\n\nThis is an independent observational challenge to a specific earlier best-fit profile, not a detection of the cosmic-dawn 21-cm signal or proof that every possible 21-cm absorption profile is absent. The reported 95.3% applies to one best-fit template; the paper gives 90.4% for the weighted set of allowed profiles. Results rely on the selected 55–85 MHz science band, sixth-order foreground model, assumed systematic-error treatment and finite sensitivity. The cause of the EDGES spectral feature is not independently identified. The EDGES report is recorded separately with its own authors.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nSaurabh Singh; Jishnu Nambissan T.; Ravi Subrahmanyan; N. Udaya Shankar; B. S. Girish; A. Raghunathan; R. Somashekar; K. S. Srivani; Mayuri Sathyanarayana Rao\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [On the detection of a cosmic dawn signal in the radio background](https://arxiv.org/pdf/2112.06778v1)\n",
      "summary": "The SARAS 3 radiometer measured a sky-averaged radio spectrum and compared it with the absorption profile previously reported by EDGES. With the paper’s foreground and calibration model, its fit disfavoured the earlier best-fitting profile at 95.3% confidence; the authors also tested the wider set of profiles allowed by EDGES.",
      "title": "SARAS 3 tests a reported cosmic-dawn absorption profile"
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    "id": "saras3-independent-test-edges-cosmic-dawn-profile",
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    "title": "SARAS 3 tests a reported cosmic-dawn absorption profile",
    "context": "Observational cosmology",
    "track": "Source-reported experimental result or reusable measurement method",
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    "what_changed": "The SARAS 3 radiometer measured a sky-averaged radio spectrum and compared it with the absorption profile previously reported by EDGES. With the paper’s foreground and calibration model, its fit disfavoured the earlier best-fitting profile at 95.3% confidence; the authors also tested the wider set of profiles allowed by EDGES.",
    "scope": "The SARAS 3 radiometer measured a sky-averaged radio spectrum and compared it with the absorption profile previously reported by EDGES. With the paper’s foreground and calibration model, its fit disfavoured the earlier best-fitting profile at 95.3% confidence; the authors also tested the wider set of profiles allowed by EDGES. This is an independent observational challenge to a specific earlier best-fit profile, not a detection of the cosmic-dawn 21-cm signal or proof that every possible 21-cm absorption profile is absent. The reported 95.3% applies to one best-fit template; the paper gives 90.4% for the weighted set of allowed profiles. Results rely on the selected 55–85 MHz science band, sixth-order foreground model, assumed systematic-error treatment and finite sensitivity. The cause of the EDGES spectral feature is not independently identified. The EDGES report is recorded separately with its own authors.",
    "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. This is an independent observational challenge to a specific earlier best-fit profile, not a detection of the cosmic-dawn 21-cm signal or proof that every possible 21-cm absorption profile is absent. The reported 95.3% applies to one best-fit template; the paper gives 90.4% for the weighted set of allowed profiles. Results rely on the selected 55–85 MHz science band, sixth-order foreground model, assumed systematic-error treatment and finite sensitivity. The cause of the EDGES spectral feature is not independently identified. The EDGES report is recorded separately with its own authors.",
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