The sensitivity of the seismic solar model to Newton's constant
Bibliographic record
Abstract
New experimental determinations of Newton's gravitational constant have been recently given. There are significant disagreements between these new measurements. We show that the high accuracy obtained with current standard solar models is such that the uncertainties in core temperature profiles arising from the uncertainties in G can be comparable to the range in predictions by the solar standard model of the observed acoustic modes and solar neutrino fluxes. Solar models that have been computed with a relatively high value of Newton's constant, in agreement with the new measurements, produce an increase in the predicted sound speed and density profiles, with significant changes in the solar structure within the central region. These solar models predict a value of the active 8B neutrino flux slightly closer to the Sudbury Neutrino Observatory and Super-Kamiokande measurements than the value obtained with the previous solar standard model (with G from CODATA 1986). Furthermore, we find that solar models with G between 6.65 × 10−8 and 6.685 × 10−8 cm3 g−1 s−2 will have a reasonable agreement with the seismic solar model. Current uncertainties in solar physics and opacities prevent any stronger conclusions at present. However, we may be able potentially to use the Sun to determine an independent value of Newton's constant, representing an alternative measurement to the value that is determined in Earth laboratories.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".