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Comment on the recent claims of H0 measurements with the ZTF DR2 SN Ia sample (arXiv:2610.36051) — arXiv:2611.07794

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.07794
License (as archived): CC0-1.0
Archived: 2026-11-06T14:55:52.782Z
SHA-256 of the archived text: bb013532124f8cb565d5f31452ba913213b4fff9c88faf1adc65d7dcf546c125
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How to cite

Comment on the recent claims of H0 measurements with the ZTF DR2 SN Ia sample (arXiv:2610.36051) — arXiv:2611.07794 — arXiv (en), https://arxiv.org/abs/2611.07794 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_4094deecafe5 (Metraipolis archive dc_4094deecafe5, sha256 bb013532124f8cb565d5f31452ba913213b4fff9c88faf1adc65d7dcf546c125)

BibTeX

@misc{dc4094deecafe5,
  title = {Comment on the recent claims of H0 measurements with the ZTF DR2 SN Ia sample (arXiv:2610.36051) — arXiv:2611.07794},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.07794},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_4094deecafe5; sha256 bb013532124f8cb565d5f31452ba913213b4fff9c88faf1adc65d7dcf546c125},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.07794. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Karchev et al. (2026) derived a value of H0 by combining the ZTF SN Ia DR2 sample with SH0ES calibrator Type Ia supernovae (SNe Ia; Riess et al. 2022), used to anchor the SN Ia absolute luminosity. The ZTF SN Ia DR2 dataset (Rigault et al., 2025) is the largest (O(3000)) SN Ia sample to date obtained with a single telescope. However, as emphasized in the data release, the absolute photometric calibration of the survey has not yet been established to the precision required for cosmological inference. The relative photometric zeropoint offset between the SH0ES and ZTF SN Ia DR2 samples, which is fully degenerate with H0, is therefore unknown and cannot be determined from publicly available data. The photometric corrections introduced in Karchev et al. (2026) do not address this global calibration offset. Consequently, their reported H0 determination is not supported by the available calibration information. We nonetheless share the excitement of pursuing state-of-the-art cosmology with ZTF and are actively working toward the release of a fully calibrated dataset

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.CO, nuovi lavori del giorno).
Categorie arXiv: Cosmology and Nongalactic Astrophysics (astro-ph.CO).
Pagina del lavoro: https://arxiv.org/abs/2611.07794 — 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 2026-11-06T14:38:36.037Z dalla pagina https://arxiv.org/list/astro-ph.CO/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).