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No rungs attached: A distance-ladder-free determination of the Hubble constant through type II supernova spectral modelling

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Názov: No rungs attached: A distance-ladder-free determination of the Hubble constant through type II supernova spectral modelling
Autori: Vogl, C., Taubenberger, S., Csörnyei, G., Leibundgut, B., Kerzendorf, W. E., Sim, S. A., Peterson, E. R., Courtois, H. M., Blondin, S., Flörs, A., Holas, A., Shields, J. V., Spyromilio, J., Suyu, S. H., Hillebrandt, W.
Prispievatelia: HEP, INSPIRE
Zdroj: Vogl, C, Taubenberger, S, Csörnyei, G, Leibundgut, B, Kerzendorf, W E, Sim, S A, Peterson, E R, Courtois, H M, Blondin, S, Flörs, A, Holas, A, Shields, J V, Spyromilio, J, Suyu, S H & Hillebrandt, W 2025, 'No rungs attached: A distance-ladder-free determination of the Hubble constant through type II supernova spectral modelling', Astronomy and Astrophysics, vol. 702, A41. https://doi.org/10.1051/0004-6361/202452910
Publication Status: Preprint
Informácie o vydavateľovi: EDP Sciences, 2025.
Rok vydania: 2025
Predmety: High Energy Astrophysical Phenomena (astro-ph.HE), Distance scale, Cosmology and Nongalactic Astrophysics (astro-ph.CO), name=Astronomy and Astrophysics, general [Supernovae], name=Space and Planetary Science, Radiative transfer, FOS: Physical sciences, Solar and Stellar Astrophysics, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], Cosmology and Nongalactic Astrophysics, High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR)
Popis: The ongoing discrepancy among Hubble constant (H_0) estimates obtained through local distance ladder methods and early Universe observations poses a significant challenge to the ΛCDM model, suggesting potential new physics. Type II supernovae (SNe II) offer a promising technique for determining H_0 in the Local Universe independently of the traditional distance ladder approach, opening up a complimentary path for testing this discrepancy. We aim to provide the first H_0 estimate using the tailored expanding photosphere method (EPM) applied to SNe II, made possible by recent advancements in spectral modelling that enhance its precision and efficiency. Our tailored EPM measurement utilises a spectral emulator to interpolate between radiative transfer models calculated with tardis allowing us to fit SN spectra efficiently and derive self-consistent values for luminosity-related parameters. We applied the method to a set of public data for ten SNe II at redshifts between and Our analysis demonstrates that the tailored EPM allows us to obtain H_0 measurements with a precision comparable to the most competitive established techniques, even when applied to literature data that are not designed for cosmological applications. We find an independent H_0 value of $74.9±1.9$ (stat) mathrm km s Mpc which is consistent with most current local measurements. Considering dominant sources of systematic effects, we conclude that our systematic uncertainty is comparable to (or less than) the current statistical uncertainty. This proof-of-principle study highlights the potential of the tailored EPM as a robust and precise tool for investigating the Hubble tension independently of the local distance ladder. Observations of SNe II tailored to H_0 estimations could make this an even more powerful tool by improving the precision and allowing us to improve our understanding of the systematic uncertainties and how to control them.
Druh dokumentu: Article
Popis súboru: application/pdf
ISSN: 1432-0746
0004-6361
DOI: 10.1051/0004-6361/202452910
DOI: 10.48550/arxiv.2411.04968
Prístupová URL adresa: http://arxiv.org/abs/2411.04968
https://pure.qub.ac.uk/en/publications/dd8cbc30-b57b-433c-876c-3eb9969fc0dc
https://hal.science/hal-04805254v1
https://doi.org/10.1051/0004-6361/202452910
Rights: EDP Sciences Copyright and Publication Licensing Policy
arXiv Non-Exclusive Distribution
CC BY
Prístupové číslo: edsair.doi.dedup.....fb75cef00b3ca3257fa8adc264d43ca6
Databáza: OpenAIRE
Popis
Abstrakt:The ongoing discrepancy among Hubble constant (H_0) estimates obtained through local distance ladder methods and early Universe observations poses a significant challenge to the ΛCDM model, suggesting potential new physics. Type II supernovae (SNe II) offer a promising technique for determining H_0 in the Local Universe independently of the traditional distance ladder approach, opening up a complimentary path for testing this discrepancy. We aim to provide the first H_0 estimate using the tailored expanding photosphere method (EPM) applied to SNe II, made possible by recent advancements in spectral modelling that enhance its precision and efficiency. Our tailored EPM measurement utilises a spectral emulator to interpolate between radiative transfer models calculated with tardis allowing us to fit SN spectra efficiently and derive self-consistent values for luminosity-related parameters. We applied the method to a set of public data for ten SNe II at redshifts between and Our analysis demonstrates that the tailored EPM allows us to obtain H_0 measurements with a precision comparable to the most competitive established techniques, even when applied to literature data that are not designed for cosmological applications. We find an independent H_0 value of $74.9±1.9$ (stat) mathrm km s Mpc which is consistent with most current local measurements. Considering dominant sources of systematic effects, we conclude that our systematic uncertainty is comparable to (or less than) the current statistical uncertainty. This proof-of-principle study highlights the potential of the tailored EPM as a robust and precise tool for investigating the Hubble tension independently of the local distance ladder. Observations of SNe II tailored to H_0 estimations could make this an even more powerful tool by improving the precision and allowing us to improve our understanding of the systematic uncertainties and how to control them.
ISSN:14320746
00046361
DOI:10.1051/0004-6361/202452910