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Axions and the RR Lyrae Period-Luminosity Relation — arXiv:2609.27159

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.27159
License (as archived): CC0-1.0
Archived: 2026-10-08T13:18:07.228Z
SHA-256 of the archived text: 47ec9223bc0399aa9117b9cf8a4df385360f7b89b55e30759c0b05d726f14dd0
Stable URL of this page: https://metraipolis.com/documento/dc_4288bb0475ef

How to cite

Axions and the RR Lyrae Period-Luminosity Relation — arXiv:2609.27159 — arXiv (en), https://arxiv.org/abs/2609.27159 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_4288bb0475ef (Metraipolis archive dc_4288bb0475ef, sha256 47ec9223bc0399aa9117b9cf8a4df385360f7b89b55e30759c0b05d726f14dd0)

BibTeX

@misc{dc4288bb0475ef,
  title = {Axions and the RR Lyrae Period-Luminosity Relation — arXiv:2609.27159},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.27159},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_4288bb0475ef; sha256 47ec9223bc0399aa9117b9cf8a4df385360f7b89b55e30759c0b05d726f14dd0},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.27159. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We investigate the impact of axions on the period-luminosity relation (PLR) of RR Lyrae stars. During the red giant branch phase, emission through the electron coupling cools the core, increasing its mass at ignition. The larger core produces more luminous horizontal-branch stars, systematically shifting the zero point of the RR Lyrae PLR toward brighter magnitudes. We model the RR Lyrae population of the globular cluster M3 using stellar evolution and pulsation calculations tailored to its age and composition, and compare the resulting synthetic $K_s$-band PLR with observations. For $\alpha_{26}\equiv 10^{26}g_{ae}^2/4\pi=0.5$, the axion-induced shift in the predicted PLR is comparable to the current uncertainty in the absolute M3 zero-point calibration.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-24 in astro-ph.CO).
Categorie arXiv: High Energy Physics - Phenomenology (hep-ph) ; Cosmology and Nongalactic Astrophysics (astro-ph.CO); Astrophysics of Galaxies (astro-ph.GA); Solar and Stellar Astrophysics (astro-ph.SR).
Pagina del lavoro: https://arxiv.org/abs/2609.27159 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-08T13:10:03.510Z dalla pagina https://arxiv.org/catchup/astro-ph.CO/2026-09-24?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).