Experimental astroparticle physics

Francesco Salamida

Associate Professor in Experimental Physics at the University of L'Aquila, working on ultra-high-energy cosmic rays, detector performance and multimessenger astroparticle physics.

Research profile

My research activity is mainly focused on astroparticle physics and ultra-high-energy cosmic rays within the Pierre Auger Collaboration. I work on the hybrid energy spectrum, fluorescence-detector performance, exposure calculations, energy-scale comparisons between Auger and Telescope Array, and the phenomenology of Lorentz Invariance Violation and ultra-high-energy photon propagation.

I also contribute to rare-event and multimessenger astroparticle studies at LNGS and to simulation tools for cosmic-ray propagation and detector-response modelling. Since 2024 I have been an author of the Particle Data Group Review of Particle Physics.

Current appointment

Associate Professor in Experimental Physics
University of L'Aquila, Department of Physical and Chemical Sciences

Selected roles

  • Leader, local INFN Pierre Auger group at L'Aquila and GSSI
  • Member, Telescope Array - Auger Joint Spectrum Working Group
  • Auger Fluorescence Detector Performance Coordinator
  • Coordinator, Auger Hybrid Spectrum activities
  • Departmental coordinator, PLS Physics programme

Research activity

Current scientific work, without legacy experiment pages that no longer represent the active focus of the site.

Pierre Auger Observatory

The Pierre Auger Observatory combines surface and fluorescence measurements to study the highest-energy cosmic rays. My work focuses on the hybrid energy spectrum, exposure, fluorescence-detector performance, detector-response modelling and the comparison of Auger and Telescope Array energy spectra.

Learn more

Propagation and phenomenology

I work on Monte Carlo simulation of ultra-high-energy cosmic-ray propagation, including SimProp and CRPropa-based studies, cosmogenic photons and neutrinos, Lorentz Invariance Violation, photon-ALP mixing and the interpretation of high-energy multimessenger signals.

Detector performance

A central part of my activity concerns calibration, atmospheric monitoring, fluorescence and microwave detection techniques, optical instrumentation, SiPM technologies and the construction of reliable detector-response models for spectrum and composition analyses.

Teaching and supervision

I teach and supervise students at the University of L'Aquila on nuclear and subnuclear physics, astroparticle physics, statistical tools, detector performance and advanced simulation techniques.

  • Nuclear and Subnuclear Physics
  • Nuclear Physics
  • General and Atmospheric Physics
  • Advanced Simulation Techniques
  • Statistical Tools for Astroparticle Physics

Selected publications

A compact selection. Full and continuously updated records are available on INSPIRE-HEP and ORCID.

  1. C. Evoli, I. Vaiman, S. Petrera, F. Salamida, Updated air-shower Xmax moment parametrizations for UHECR composition with latest hadronic interaction models, Astroparticle Physics 179 (2026) 103239.
  2. F. Salamida for the Pierre Auger and Telescope Array Collaborations, Updated comparison of the UHECR energy spectra measured by the Pierre Auger Observatory and the Telescope Array, PoS ICRC2025 (2025) 381.
  3. F. Salamida for the Pierre Auger Collaboration, Highlights from the Pierre Auger Observatory, PoS ICRC2023 (2023) 016.
  4. R. Aloisio, D. Boncioli, A. di Matteo, A. F. Grillo, S. Petrera, F. Salamida, SimProp v2r4: Monte Carlo simulation code for UHECR propagation, JCAP 11 (2017) 009.
  5. The Pierre Auger Collaboration, F. Salamida corresponding author and coordinator, The exposure of the hybrid detector of the Pierre Auger Observatory, Astroparticle Physics 34 (2011) 368-381.