29th European Cosmic Ray Symposium (ECRS 2026)

Session

Highlights

29 Jun 2026, 11:45

Salon Peregrinos (Hospederia San Martin Pinario)

70. First data and performance of the Radio Detector of the Pierre Auger Observatory

Jörg Hörandel

29/06/2026, 11:45

CRI - Indirect measurements of cosmic rays

Invited oral contribution

The Radio Detector of the Pierre Auger Observatory measures radio emission from extensive air showers in the frequency range of 30–80 MHz. Covering an area of 3000 km², it constitutes the largest installation dedicated to the radio detection of cosmic particles, including charged cosmic rays, gamma rays, and neutrinos. Commissioning was completed at the end of 2024, and the radio antennas now...

85. Observations and modeling of gamma-ray halos around pulsars

Silvia Manconi

30/06/2026, 11:45

THEO - Acceleration, propagation, origin of cosmic rays

Invited oral contribution

The discovery of extended gamma-ray halos around middle-aged Galactic pulsars—most notably Geminga—has opened a new window into understanding cosmic ray transport in the interstellar medium. These halos, detected so far from GeV to TeV energies, are primarily attributed to the inverse Compton scattering of ambient photon fields by relativistic electrons and positrons escaping the pulsar....

95. The Southern Wide-field Gamma-Ray Observatory

Dr Hazal Göksu (Max Planck Institute for Nuclear Physics)

30/06/2026, 12:15

INSTR - Future measurements, instrumentation and methods

Invited oral contribution

The Southern Wide-field Gamma-Ray Observatory (SWGO) is a planned wide-field gamma-ray observatory consisting of an array of water Cherenkov detector (WCD) units. Existing WCD instruments such as HAWC and LHAASO, located in the Northern hemisphere, have demonstrated the scientific potential of continuous, wide-field observations. Their discoveries include extended emission around pulsars,...

51. Scaler data from the Pierre Auger Observatory and solar activity

Carla Dina Marcella Taricco (Dipartimento di Fisica - Università di Torino)

01/07/2026, 11:45

SH - Solar and heliospheric cosmic rays, SEPs and GCR propagation

Invited oral contribution

The low-threshold rate (scaler) time series recorded over 16 years of
operation by the surface detectors of the Pierre Auger Observatory in
Malargüe (Argentina) allows for a thorough and detailed investigation
of the Galactic Cosmic-Ray flux variations in the heliosphere due to solar activity
and can be considered as a new proxy of solar variability. This result
was achieved by an...

36. Highlights from a Decade of Observations with CALET on the International Space Station

Paolo Brogi (Universita degli studi di Siena (IT))

01/07/2026, 12:15

CRD - Direct measurements of cosmic rays

Invited oral contribution

The CALorimetric Electron Telescope (CALET) is a high energy astroparticle physics experiment in operation on the Japanese Experiment Module-Exposed Facility (JEM-EF) of the International Space Station (ISS). Since the start of operations in 2015, CALET has been in continuous observation with excellent performance for over 10 years, mainly triggering on high energy (>10 GeV) cosmic-ray showers...

96. Constraining Hadronic Interaction Models with Astroparticle and Accelerator-based Data

Dennis Soldin (University of Utah)

02/07/2026, 11:45

EAS - Air shower physics and hadronic interactions

Invited oral contribution

Over the past decades, various experiments have measured the characteristics of extensive air shower observables across several orders of magnitude in cosmic-ray energy. Many of these measurements reveal significant discrepancies between observations and predictions from simulations based on QCD-inspired phenomenological hadronic interaction models. These models usually include parameters...

69. Beyond Charged Particles: the Pierre Auger Observatory in Multi-Messenger Astronomy

Piera Luisa GHIA

02/07/2026, 12:15

MM - Multimessenger: Gamma-rays, Neutrinos, Dark Matter

Oral contribution

The Pierre Auger Observatory, the world’s largest cosmic-ray detector, is intrinsically a multi-messenger instrument, driven by its goal of uncovering the origin and nature of the highest-energy particles in the Universe. Even at the highest energies, cosmic rays are predominantly nuclei, and their deflection by magnetic fields prevents direct source identification. Although Auger observations...

4. Ten Years of the Dark Matter Particle Explorer (DAMPE): Mission Overview and Recent Results

Paul Coppin (Universite de Geneve (CH))

03/07/2026, 11:45

CRD - Direct measurements of cosmic rays

Oral contribution

The Dark Matter Particle Explorer (DAMPE) is an ongoing spaceborne experiment for direct detection of cosmic rays. DAMPE’s deep calorimeter and large dataset, accumulated over more than 10 years of operation, place the mission at the forefront of high-energy galactic cosmic-ray physics. This has enabled the measurement of cosmic-ray fluxes up to the PeV scale, unveiling new features in both...

8. Recent advances in studies of extreme solar particle events

Sergey Koldobskiy (University of Oulu (FI))

03/07/2026, 12:15

SH - Solar and heliospheric cosmic rays, SEPs and GCR propagation

Oral contribution

Terrestrial cosmogenic isotope records indicate that extreme solar particle events (ESPEs) occurred in the past, with magnitudes exceeding those observed during the space era by orders of magnitude. These rare events occur, on average, approximately once every 1,500 years.
This talk will provide an overview of recent progress in ESPE research, including improved reconstructions from...

94. Wind bubbles as cosmic-ray sources

Enrico Peretti (INAF-OAA)

THEO - Acceleration, propagation, origin of cosmic rays

Invited oral contribution

Wind bubbles are ubiquitous at several scales throughout the Cosmos. They typically develop extended structures characterized by strong shocks and turbulence where high-energy cosmic rays can be efficiently accelerated. I will discuss the particle transport in these objects and I will especially focus on diffusive shock acceleration as a key acceleration mechanism. I will finally show some...