Axion Constraints from White Dwarf Cooling in 47 Tucanae

arXiv:2511.21676 · astro-ph.SR, astro-ph.GA, hep-ph · Submitted 2025-11-26 · Read on arXiv

astro-ph.SR, astro-ph.GA, hep-ph

Submitted: 2025-11-26

Updated: 2026-09-04

Comments: 29 pages + appendices, 7 figures in main text (+ 21 figures in appendices), this is the accepted version with much added discussion of the sensitivities to the underlying physical assumptions

Project page: http://www.astro.umontreal.ca/~bergeron/CoolingModels

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Core — 8× in this paper · explained in 2 episodes
• Degeneracy — 4× in this paper · explained in 3 episodes
• Hubble Space Telescope — 4× in this paper
• Benchmark — 2× in this paper · explained in 2 episodes
• Advanced Camera for Surveys — 1× in this paper
• Calibration — 1× in this paper · explained in 7 episodes
• Mass Segregation — 1× in this paper · explained in 2 episodes
• Small Magellanic Cloud — 1× in this paper
• Wide Field Channel — 1× in this paper

Sources

• The Cooling of Old White Dwarfs in 47 Tucanae

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