Research-Stack/6-Documentation/docs/historical_stellar_gas_model_ladder_2026-05-09.md
2026-05-11 22:18:31 -05:00

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Historical Stellar Gas Model Ladder

Date: 2026-05-09

Decision: ADMIT_HISTORICAL_PRIOR_SURFACE

Claim boundary: this is a historical prior and routing surface. It does not claim that the current MaNGA proxy fit validates any physical law or detects a specific shock event.

Why This Helps

The stack now has a wide historical basis for stellar gas modeling rather than a single modern blob. Each law family gets a receipt role:

historical law -> observable hook -> current column/proxy -> gate

Current Support

  • Models mapped: 15
  • Admitted prior support: 4
  • Partial prior support: 11
  • No current observable: 0

Ladder

Period Law family Names Support Decision
1687 gravity_and_orbital_context Isaac Newton 1.000000 ADMIT_PRIOR_SUPPORT
1738 pressure_flow_energy Daniel Bernoulli 0.995165 HOLD_PARTIAL_PRIOR_SUPPORT
1750s inviscid_fluid_conservation Leonhard Euler 0.992577 ADMIT_PRIOR_SUPPORT
1820s-1840s viscous_fluid_dynamics Claude-Louis Navier, George Gabriel Stokes 0.983193 ADMIT_PRIOR_SUPPORT
1860s-1870s kinetic_theory James Clerk Maxwell, Ludwig Boltzmann 0.983193 HOLD_PARTIAL_PRIOR_SUPPORT
1870s-1880s shock_jump_conservation William John Macquorn Rankine, Pierre-Henri Hugoniot 0.989179 HOLD_PARTIAL_PRIOR_SUPPORT
1800s-1900s spectral_line_identification Fraunhofer, Kirchhoff, Bunsen, many later spectroscopists 0.560264 HOLD_PARTIAL_PRIOR_SUPPORT
1870s-1900s polytropic_stellar_structure Jonathan Homer Lane, Robert Emden 0.970548 HOLD_PARTIAL_PRIOR_SUPPORT
1920 ionization_state Meghnad Saha 0.758040 HOLD_PARTIAL_PRIOR_SUPPORT
1900s-1930s absorption_emission_transport Karl Schwarzschild, Arthur Eddington, Subrahmanyan Chandrasekhar 0.634580 ADMIT_PRIOR_SUPPORT
1902 gravitational_instability James Jeans 0.983193 HOLD_PARTIAL_PRIOR_SUPPORT
1940s-1950s self_similar_blast_front Leonid Sedov, Geoffrey Taylor, John von Neumann 0.995165 HOLD_PARTIAL_PRIOR_SUPPORT
1940s magnetized_plasma_flow Hannes Alfven 0.983193 HOLD_PARTIAL_PRIOR_SUPPORT
1958 stellar_wind_outflow Eugene Parker 0.991283 HOLD_PARTIAL_PRIOR_SUPPORT
late_1900s-2000s radiation_hydrodynamic_breakout radiation hydrodynamics community 0.995165 HOLD_PARTIAL_PRIOR_SUPPORT

Source Notes

  • NASA Report 1135: Equations, Tables, and Charts for Compressible Flow: https://www.nasa.gov/wp-content/uploads/2023/03/equations-tables-charts-compressibleflow-report-1135.pdf
  • NASA Technical Reports Server: Local stability analysis for a planar shock wave: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19850004556.pdf
  • Sedov Equation, Wolfram ScienceWorld: https://scienceworld.wolfram.com/physics/SedovEquation.html
  • Coupling of matter and radiation at supernova shock breakout: https://doi.org/10.1093/mnras/sts577

Next Gate

The current support is strongest for velocity, dispersion, and named line-ratio proxy lanes. The next refinement is adding uncertainty, electron-density, temperature, and attenuation gates so Saha, radiative transfer, and shock-excitation support can move beyond proxy status.