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PreprintCC BY 4.0arXiv

The road to H0, Ωm, and w with a global neutrino-telescope network

  • Pavel Zhelnin
  • Gonzalo Herrera
  • Nicholas Kamp
  • Carlos A. Argüelles
Open at sourcePDFDOICite

Abstract

The newly measured correlation between the neutrino and X-ray luminosities of Seyfert galaxies has yielded the first neutrino-based measurement of the Hubble constant. Building on this result, we forecast the reach of a global neutrino-telescope network by 2030, utilizing full-sky IceCube exposures combined with KM3NeT-ARCA and Baikal-GVD. We find that this 2030 configuration sharpens the neutrino-measured Hubble constant from today's H0 = 66+44−37 to H0 =66+15−13 km s−1 Mpc−1. Additionally, we project that the disk-corona slope of the neutrino X-ray luminosity relation (Lν∝ LXβ) will reach β=0.72±0.04, enabling a ≥ 5σ exclusion of the calorimetric value β=1. Finally, we show that, if a high-redshift population of neutrino sources, such as JWST's "little red dots," is identified and obeys the same luminosity relation, we can obtain a new independent measurement of the matter density Ωm and the dark energy equation-of-state parameter w.

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Cite

BibTeXRIS
BibTeX
@misc{zhelnin2026road,
  title = {{The road to $H_0$, $Ω_m$, and $w$ with a global neutrino-telescope network}},
  author = {Pavel Zhelnin and Gonzalo Herrera and Nicholas Kamp and Carlos A. Argüelles},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.12577},
  eprint = {2610.12577},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.12577},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - The road to H_0, Ω_m, and w with a global neutrino-telescope network
AU  - Pavel Zhelnin
AU  - Gonzalo Herrera
AU  - Nicholas Kamp
AU  - Carlos A. Argüelles
PY  - 2026
DA  - 2026/10/08
PB  - arXiv
DO  - 10.48550/arxiv.2610.12577
UR  - https://arxiv.org/abs/2610.12577
AB  - The newly measured correlation between the neutrino and X-ray luminosities of Seyfert galaxies has yielded the first neutrino-based measurement of the Hubble constant. Building on this result, we forecast the reach of a global neutrino-telescope network by 2030, utilizing full-sky IceCube exposures combined with KM3NeT-ARCA and Baikal-GVD. We find that this 2030 configuration sharpens the neutrino-measured Hubble constant from today's H_0 = 66^+44_−37 to H_0 =66^+15_−13 km s^−1 Mpc^−1. Additionally, we project that the disk-corona slope of the neutrino X-ray luminosity relation (L_ν∝ L_X^β) will reach β=0.72±0.04, enabling a ≥ 5σ exclusion of the calorimetric value β=1. Finally, we show that, if a high-redshift population of neutrino sources, such as JWST's "little red dots," is identified and obeys the same luminosity relation, we can obtain a new independent measurement of the matter density Ω_m and the dark energy equation-of-state parameter w.
ER  -