• Determinación de la constante de Hubble mediante observaciones del Universo Local 

  Serrano González, Borja; Cuesta, A.J.; Ortiz Mora, Antonio (Real Sociedad Española de Física, 2020-04)

  En este trabajo se ofrece el resultado de una determinación directa de la constante de Hubble H0 a partir de observaciones del Universo Local. Para ello hemos usado la técnica de la escalera cósmica de distancias siguiendo ...

• BAO cosmology in non-spatially flat background geometry from BOSS+eBOSS and lessons for future surveys 

  Sanz-Wuhl, Santiago; Gil-Marín, Héctor; Cuesta, A.J.; Verde, Licia (IOP Publishing, 2024)

  We study the impact of the assumption of a non-flat fiducial cosmology on the measurement, analysis and interpretation of BAO distance variables, along and across the line-of-sight. The assumption about cosmology enters ...

• Evidence for baryon acoustic oscillations from galaxy–ellipticity correlations 

  Xu, Kun; Jing, Y.P.; Zhao, Gong-Bo; Cuesta, A.J. (Springer, 2023)

  The Baryon Acoustic Oscillations (BAO) feature in the clustering of galaxies or quasars provides a "standard ruler" for distance measurements in cosmology. In this work, we report a 2∼3σ signal of the BAO dip feature in ...

• Photon to axion conversion during Big Bang Nucleosynthesis 

  Cuesta, A.J.; Illana, J.I.; Masip, M. (IOP Publishing, 2023)

  We investigate how the resonant conversion at a temperature T¯=25-65 keV of a fraction of the CMB photons into an axion-like majoron affects BBN. The scenario, that assumes the presence of a primordial magnetic field and ...

• Cosmology of an axion-like majoron 

  Cuesta, A.J.; Gómez, M.E.; Illana, J.I.; Masip, M. (IOP Publishing, 2022)

  We propose a singlet majoron model that defines an inverse seesaw mechanism in the ν sector. The majoron ϕ has a mass mϕ ≈ 0.5 eV and a coupling to the τ lepton similar to the one to neutrinos. In the early universe it is ...

View more