Weak-lensing catalogues, mass maps, and redshift calibration
Understanding how weak-lensing measurements are built, calibrated, and validated, from galaxy redshifts and shear catalogues to mass-map reconstruction.
Marco Gatti
I am an observational cosmologist and Ramón y Cajal Fellow at ICE-CSIC, and PI of the ERC-funded research programme COSMO-SBI, focused on simulation-based inference, weak gravitational lensing, CMB secondary anisotropies, and nonlinear large-scale structure.
My work combines survey data, forward modelling, higher-order statistics, and multi-probe inference, with current leadership and analysis activities in DES, Euclid, and SPT.
Job opportunities
PhD and postdoctoral positions
Current group openings and relevant external fellowship routes are collected on the opportunities page.
About me
I am an observational cosmologist working across the full weak-lensing analysis chain, from the construction and calibration of survey data products to cosmological inference. This includes redshift calibration, shear catalogues, mass maps, and systematic-error tests.
I also develop higher-order statistics and simulation-based inference methods to extract information beyond standard two-point analyses, and I combine galaxy weak lensing with CMB lensing and the thermal Sunyaev–Zel’dovich effect.
I am based at the Institute of Space Sciences (ICE-CSIC) in Barcelona and am part of the ICE-CSIC Cosmology Group.
Research
Weak-lensing inference beyond two-point statistics
Higher-order statistics, learned summaries, and simulation-based inference, with a focus on robust cosmological analyses.
CMB lensing, tSZ, and baryonic physics
Combining galaxy weak lensing with CMB secondary anisotropies to probe matter, gas, baryonic feedback, and cosmology across a broad range of scales and redshifts.
Contact
Marco Gatti
Institute of Space Sciences (ICE-CSIC)
Barcelona, Spain