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    IberiCos 2025

    14–16 Apr 2025
    Europe/Lisbon timezone

    Contact

    Session

    Session 10 - Observational Cosmology

    16 Apr 2025, 11:30
    Auditorium C.1

    Auditorium C.1

    Department of Physics (University of Coimbra)

    Conveners

    Session 10 - Observational Cosmology

    • Session convener: Mar Bastero-Gil

    Presentation materials

    There are no materials yet.

    1. 21. Quantifying BAO tension and its implications for late-time solutions to the Hubble crisis
      Arianna Favale (University of Rome Tor Vergata)
      16/04/2025, 11:30
      Talk

      Several studies in the literature have found a discrepancy between Baryon Acoustic Oscillation (BAO) measurements derived from two distinct methodologies, i.e. the two-dimensional (2D, angular) and the three-dimensional (3D, anisotropic) BAO. Since these probes play a key role in building the inverse distance ladder, this inconsistency affects discussions on the Hubble tension and its...

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    2. 25. The revival of galaxy-quasar correlations for cosmology
      Marcos Muniz Cueli
      16/04/2025, 11:45
      Talk

      Weak gravitational lensing has flourished into one of the most competitive fields in cosmology, based on two main pillars, namely cosmic shear and galaxy-galaxy lensing. However, there is a third pillar that is usually overlooked as an observable in itself: cosmic magnification, the statistical correlation in the sky between the position of foreground galaxies and the number counts of...

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    3. 27. Cosmography via Stellar Archaeology of stacked SDSS Legacy ETGs
      Carlos Alonso Álvarez
      16/04/2025, 12:00
      Talk

      This work uses Lick indices to derive an independent, cosmology-free measurement of the Hubble parameter H(z), focusing on massive, passive galaxies at low redshift (z<0.4) from SDSS Legacy data. Unlike prior studies based on Full Spectral Fitting (FSF) or the D4000 spectral feature, we adopt a novel combined Lick index approach. Two Stellar Population Synthesis models are employed: Thomas,...

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    4. 30. Study of the physical properties of strong gravitational lens candidates in the sub-mm through SED analysis
      JUAN ALBERTO CANO DIEZ
      16/04/2025, 12:15
      Talk

      Submillimeter galaxies (SMGs) are a population of high-redshift, dust-obscured galaxies with high star-formation rates and a steep number of counts, making them crucial for understanding galaxy formation and evolution. This study investigates the physical properties of 68 candidate gravitationally lensed SMGs at $z>1.2$ from the Herschel-ATLAS catalog, along with their associated lenses at...

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    5. 51. Varying fundamental constants cosmography
      Carlos Martins
      16/04/2025, 12:30
      Talk

      Cosmography is a model-independent phenomenological approach to observational cosmology, relying on Taylor series expansions of physical quantities as a function of the cosmological redshift or analogous variables. A recent work [Martins et al. Phys. Lett. B827 (2022) 137002] developed the formalism for a cosmographic analysis of astrophysical and local measurements of the fine-structure...

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