Simulation of Astrophysical Jets: Collimation and Expansion into Radio Lobes
Bibliographic record
Abstract
Jets in active galactic nuclei are created in accretion disks around supermassive black holes, and they can retain their collimation up to the order of a megaparsec. To understand the physical causes of this remarkable collimation over such large distances is a great challenge and could lead to important new insights in the physics of magnetoplasmas. In the present work we take a two- pronged approach. First, we simulate the behavior of jets using a new, recently developed, mathematical model. Second, we analyze the observational evidence from the well- defined jet of the relatively distant radio galaxy 3C 303. We derive new constraints on the plasma properties of the jet. The final goal is to determine the ability of MHD models to describe the collimation of extragalactic jets, their physical nature, and their role in formation of radio lobes.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".