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Record W1964457548 · doi:10.1103/physreve.62.8616

Helically symmetric astrophysical jets

2000· article· en· W1964457548 on OpenAlexafffund
Oleg I. Bogoyavlenskij

Bibliographic record

VenuePhysical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 2000
Typearticle
Languageen
FieldPhysics and Astronomy
TopicAstrophysics and Cosmic Phenomena
Canadian institutionsQueen's University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsPhysicsEquipartition theoremMagnetohydrodynamicsChandrasekhar limitMagnetic fieldKinetic energyClassification of discontinuitiesJet (fluid)Accretion (finance)PlasmaMagnetohydrodynamic driveClassical mechanicsAstrophysicsMechanicsStarsNuclear physicsQuantum mechanicsWhite dwarf

Abstract

fetched live from OpenAlex

Astrophysical jets are modeled outside of their accretion disks by the helically symmetric MHD equilibria. The derived equilibria are smooth, have no current sheets, and no discontinuities. The obtained exact solutions to the MHD equilibrium equations generalize the Chandrasekhar equipartition solution and depend upon two arbitrary functions, alpha(psi) and the plasma density rho(psi)>/=0, and 2K+2 arbitrary parameters gamma,a(N),a(mn),b(mn). The total kinetic and magnetic energy of the jet and its mass are finite in any layer c(1)<z<c(2). In view of a rapid decreasing of the magnetic field B in the transversal direction, the modeled jets are highly collimated.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.512
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.001
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0010.001
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0010.001

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.

Opus teacher head0.008
GPT teacher head0.282
Teacher spread0.275 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

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".

Quick stats

Citations31
Published2000
Admission routes2
Has abstractyes

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