Empirical Radial Dependencies of the Energy Components in Magnetized Young Stellar Objects
Bibliographic record
Abstract
Interstellar gas comes with empirical physical relations governing mean parameters such as the gas density n , diameter D , magnetic field B , and gas line width σ, with the forms ⟨ n ⟩ ∼ D c , ⟨ B ⟩ ∼ ⟨ D ⟩ p , ⟨ B ⟩ ∼ ⟨ n ⟩ k , ⟨σ⟩ ∼ ⟨ D ⟩ q , and p = ck . Using these results, I derive simple formulae for the energy components in turbulent young stellar objects of Classes 0 and I as a function of clump size D ( D < 0.5 pc) from empirical fits to observations. Here I find the relative importance of the energy components in molecular clumps, each one of the form ⟨ E ⟩ ∼ D x , with x ranging from 0 to 3. Magnetic and gravitational energies are more important for small D (<0.1 pc), while for large D (>0.1 pc) turbulent and gravitational energies become dominant ( x = 2). In addition, the expected relationship between turbulent width and magnetic field, ⟨σ⟩ ∼ ⟨ B ⟩ q / p , is not steep, and the observational data to date bear this out. Damping scenarios, magnetic field shapes, and ambipolar diffusion relevant to observations are discussed.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".