What is recorded here?
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.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
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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People and systems
Saurabh Singh; Jishnu Nambissan T.; Ravi Subrahmanyan; N. Udaya Shankar; B. S. Girish; A. Raghunathan; R. Somashekar; K. S. Srivani; Mayuri Sathyanarayana Rao
These 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.
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English catalogue narrative
SARAS 3 tests a reported cosmic-dawn absorption profile
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.
Scientific scope
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.
Reading status
This 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.
People and systems
Saurabh Singh; Jishnu Nambissan T.; Ravi Subrahmanyan; N. Udaya Shankar; B. S. Girish; A. Raghunathan; R. Somashekar; K. S. Srivani; Mayuri Sathyanarayana Rao
These 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.