XI Meeting on fundamental Cosmology, Santander – November 18-20, 2025
WELCOME COCKTAIL — Monday 19:30
Invited talks (20+5 min)
Contributed talks (12+3 min)
Tuesday 18
9:00 – Registration
9:30 – Welcome
Line Intensity Mapping / CMB (Chair: Diego Herranz)
9:40 – Present and Future of Line Intensity Mapping
10:05 – Field-level constraints on cosmic birefringence using hybrid E-B mode ILC maps
10:20 – Investigating parity violation with the polarization of the CMB
10:35 – Constraints from CMB EB power spectrum with simulation-based inference
10:50 – Flash talks I
— Foreground Mitigation Strategies for Accurate r Estimation from CMB B-Modes
— LiteBIRD’s view on the relativistic SZ effect: a parametric fitting method to obtain the electron gas temperature of galaxy clusters
— A pixel-based Neural Network method for CMB component separation in polarization
— Characterizing the properties of the atmospheric emission in the 10-20 GHz range with QUIJOTE data
11:05 – Coffee Break & Poster Session
Cosmic Microwave Background (Chair: Ricardo Génova-Santos)
11:40 – The CMB power spectrum and cosmological constraints from ACT DR6
12:05 – Tenerife Microwave Spectrometer (TMS): absolute spectral measurements in the 10–20GHz range
12:20 – Commissioning of the QUIJOTE-TFGI and sensitivity forecasts for cosmological surveys
12:35 – Spatial Variations Of Polarized Synchrotron Emission In The QUIJOTE MFI Data
12:50 – Forecasting Synchrotron Spectral Parameters with the QUIJOTE-MFI2 Instrument
13:05 – Diffuse polarised synchrotron reconstruction with GNILC
13:20 – Lunch
Constraints on cosmology with miscellaneous probes (Chair: Sergio Contreras)
14:50 – Neutrinos in Cosmology: present challenges and future prospects with Euclid
15:15 – First data from the Vera Rubin Observatory and prospects for Dark Energy research
15:30 – Cosmography via stellar archaeology of low redshift Early Type Galaxies
15:45 – Investigating Dark Matter Spikes in Low-Mass Black Hole X-Ray Binaries
16:00 – Constraining the cosmological model and the mass and redshift distributions of the binary black hole population with the Einstein Telescope
16:15 – Coffee Break
Large Scale Structure (Chair: Héctor Gil-Marín)
16:45 – Latest results from DESI and their implication
17:10 – The revival of QSO-galaxy correlations for cosmology
17:25 – Cosmology from the clustering of Evolutionary Map of the Universe radio continuum galaxies
17:40 – GalSBI: Forward modelling galaxy surveys with simulation-based inference
19:30 – Outreach Talk
Wednesday 19
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Strong lensing / Large Scale Structure (Chair: Raúl Angulo)
9:30 – Searching for gravitational waves in new frequency bands
9:55 – The Next Step in Galaxy Cluster Strong Lensing: Modelling the Surface Brightness of Multiply Imaged Sources
10:10 – Signatures of fuzzy dark matter inside radial critical curves
10:25 – Primordial Power Spectrum reconstructions from LSS Surveys
10:40 – Exploring massive neutrino cosmologies with evolution mapping
10:55 – Flash talks II
— Constraining Primordial Non-Gaussianities from density-split galaxy clustering
— Study of galaxy clustering using J-PAS mapping data
— Unified emulator pipeline for alternative clustering statistics
— The Alhambra Survey: galaxy distribution at the smallest scales
— The new era of Directional Neighborhood Fitting (DNF): From LSST to Euclid via RAIL and CosmoHub
— Characterisation of the HOD redshift and magnitude evolution from magnification bias observations
— Detecting Protoclusters with the Multi-scale Algorithm CARTHAGO
11:10 – Coffee Break & Poster Session
Lyman-alpha / Baryon Acoustic Oscillations (Chair: Jose L. Bernal)
11:45 – Cosmology from the DESI Lyman-alpha forest
12:10 – On the impact of strong absorbers metals in BAO measurements with new cosmological Lyman-alpha forest mocks.
12:25 – Missing Components in ΛCDM from DESI Y1 BAO Measurements: Insights from Redshift Remapping
12:40 – Validation of the DESI DR2 BAO Measurements from Galaxy and Quasars
12:55 – Combined constraints from DESI BAO and Full-shape analyses
13:10 – Cosmology from DES BAO and SN
13:25 – Lunch
Weak Lensing (I) (Chair: Anna Porredón)
14:55 – Weak lensing cosmology beyond two-point with Euclid and Rubin LSST
15:20 – The future of cosmological inference
15:35 – Non-Gaussian likelihoods for weak lensing and beyond
15:50 – The ESA-Euclid mission: status and expectations towards Data Release 1
16:05 – Preparing for Galaxy Cluster Detection through Weak Lensing with Euclid
16:20 – Coffee Break
Weak Lensing (II) (Chair: Daniela Grandón)
16:50 – The Dark Energy Survey Legacy: Cosmology from Y6 3×2pt
17:15 – DES Y6: cosmology from cosmic shear
17:30 – Magnification modelling for DES Y6 galaxy clustering and galaxy-galaxy lensing cosmology
17:45 – KiDS-Legacy: Cosmic shear constraints from the complete Kilo-Degree Survey
21:00 – Conference Dinner
Thursday 20
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Theoretical Cosmology (I) (Chair: Mariam Bouhmadi-López)
9:30 – Gravitational Waves from Topological defects
9:55 – Can the Topology of the Universe Affect the CMB?
10:10 – The Shape of Space in Polarized Light
10:25 – Unveiling Dark Satellites: Numerical Modelling and Implications for Gamma-Ray Dark Matter Searches
10:40 – Cosmological implications of an Axion-Like Majoron
10:55 – Flash talks III
— DESI and Gravitational Wave Constraints on α-attractor quintessential Inflationary Models
— Galaxy Rotation Curves from Self-Consistent Gravitational Energy Distributions
— Sign-Switching Dark Energy: Background Evolution, Perturbations, and Observational Constraints
— Can PBHs explain Pulsar Timing Array and JWST latest results?
— Quantum modified inertia
11:10 – Coffee Break & Poster Session
Theoretical Cosmology (II) (Chair: Mar Bastero-Gil)
11:45 – Primordial Blackholes
12:10 – The prospect of thermalisation for axion inflation
12:25 – Testing fundamental cosmological assumptions: multi-messenger constraints on the Distance Duality Relation
12:40 – Addressing H0 and S8 tensions within f(Q) cosmology
12:55 – Modeling the Non-linear Regime of Angular Redshift Fluctuations
13:10 – Tensor Backreaction in Chromo-Natural Inflation Systems: Evolution and Signatures
13:25 – Lunch
14:55 – Best Poster Award
CMB / Large Scale Structure (Chair: Mathieu Remazeilles)
15:00 – The future of CMB lensing with Planck and LiteBIRD
15:15 – Exploring Statistical Isotropy in Planck Data Release 4: Angular Clustering and Cosmological Parameter Variations Across the Sky
15:30 – Optimal delensing of CMB B modes with stage-IV CMB and galaxy survey
15:45 – Simultaneous modelling of the multi-wavelength universe for multi-probe cosmology
16:00 – Testing modified gravity with simulated galaxy catalogues
Posters
The maximum sizes for posters are:
- height: 1 m
- width: 0.70 m
Duratio of flash talks: maximum 2 minutes each, 1-2 slides
Abstracts
The conference abstracts can be found at this link.