What question did this study set out to answer?

This research aims to evaluate the accuracy of velocity dispersion predictions in Milky Way dwarf spheroidals using different methods.

June 18, 2026Open Access

CDN-256: The Dwarf Spheroidal Test

Key Points

This research aims to evaluate the accuracy of velocity dispersion predictions in Milky Way dwarf spheroidals using different methods.
Tested three methods: Newtonian physics, κ-proxy, and CDN-162 κ_c.
Analyzed 22 Milky Way dwarf spheroidal galaxies for velocity dispersion predictions.
Pre-registered CDN-257 for further examination of rotation curves.
All methods showed a significant discrepancy with σ_pred/σ_obs = 0.193.
Found a strong negative correlation (r = −0.928) between κ_req and surface brightness.
Indicated the need for new theoretical developments beyond current galaxy-scale models.

Abstract

Tests GCFT cluster κ-proxy extrapolation to 22 Milky Way dwarf spheroidals via velocity dispersion prediction. All three methods (Newtonian, proxy, CDN-162 κc) yield σₚred/σₒbs = 0. 193 — structural failure, not calibration error. The logistic proxy is bounded 0, 1 but dSphs require κ ~ 3–3300. The κᵣeq–surface brightness correlation (r = −0. 928) echoes the mass-discrepancy–acceleration relation. Theory debt D9 opened: galaxy-scale coupling requires new development outside the cluster domain. Pre-registers CDN-257 (rotation curves via SPARC).

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Cite This Study

Nicky Joseph Hubertus Catharina Hacquier (Tue,) studied this question.

synapsesocial.com/papers/6a338e6e630953a74978f006 https://doi.org/https://doi.org/10.5281/zenodo.20723310

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