https://doi.org/10.1140/epjc/s10052-025-14315-6
Regular Article - Theoretical Physics
A joint analysis of strong lensing and type Ia supernovae to determine the Hubble constant
1
Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, 59300-000, Natal, RN, Brazil
2
Departamento de Física, Universidade Federal de Campina Grande, 58429-900, Campina Grande, PB, Brazil
Received:
21
March
2025
Accepted:
14
May
2025
Published online:
26
May
2025
We present a cosmological model-independent determination of the Hubble constant, 
, by combining time-delay measurements from seven TDCOSMO systems, Einstein radius measurements, and type Ia supernovae data sourced from the Pantheon+ sample. For each lens of time-delay system, we calculate the angular diameter distance 
using the product 
, where 
is reconstructed via Gaussian Processes from 99 Einstein radius measurements, and 
is the time-delay angular distance. We also reconstruct the unanchored luminosity distance 
from supernova data. By using the cosmic distance duality relation validity, we anchor and to infer 
km/s/Mpc (68% CL). Our result, though not resolving the Hubble tension, offers a cosmological model-independent consistency check and highlights the potential of using strong lensing and supernovae data via the cosmic distance duality relation to constrain .
© The Author(s) 2025
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Funded by SCOAP3.
