8th International Symposium on Ultra High Energy Cosmic Rays (UHECR2026/7)

18 Jan 2027, 09:00 → 22 Jan 2027, 18:00 Asia/Taipei

Lecture Hall (International Conference Hall, Academia Sinica)

The 8th International Symposium on Ultra-High-Energy Cosmic Rays (UHECR2026/7) will be held from January 18 to 22, 2027, at Academia Sinica, Taipei, Taiwan.

The symposium is a new edition of a series of meetings that bring together the UHECR community and that were previously held in Nagoya (2010), CERN (2012), Springdale, Utah (2014), Kyoto (2016), Paris (2018), L'Aquila (2022), and Malargüe (2024).

The symposium will bring together the international community to discuss new observational results, theoretical developments, and future directions in ultra-high-energy cosmic-ray physics. The program will also cover the transition between Galactic and extragalactic cosmic rays and relevant connections at lower energies.

Topics will include:

• cosmic-ray sources and acceleration;
• propagation and magnetic fields;
• energy spectrum, mass composition, and anisotropy;
• the transition between Galactic and extragalactic cosmic rays;
• multi-messenger connections, including photons, neutrinos, and gravitational waves;
• hadronic interactions in air showers and at accelerators;
• direct cosmic-ray measurements and cross-calibration;
• physics beyond the Standard Model; and
• new and future experiments.

The scientific program will consist of invited reviews, contributed talks, and reports from inter-collaboration working groups, all in plenary sessions. Poster contributions are welcome. Each accepted poster will be accompanied by a five-minute flash talk, and posters may remain on display throughout the symposium.

Monday 18 January

Session I: Morning Session I

10:30 Coffee Break

Session II: Morning Session II

12:40 Lunch Break

Session V: Afternoon Session I

15:40 Coffee Break

Session VI: Afternoon Session II

17:50 Welcome Reception

Tuesday 19 January

Session VII: Morning Session I

10:30 Coffee Break

Session III: Morning Session II

12:40 Lunch Break

Session IV: Afternoon Session I

15:40 Coffee Break

Session I: Afternoon Session II

Wednesday 20 January

Session II: Morning Session I

10:30 Coffee Break

Session V: Morning Session II

12:40 Lunch Break

Session VI: Afternoon Session I

15:40 Coffee Break

Session VII: Afternoon Session II

Thursday 21 January

Session III: Morning Session I

10:30 Coffee Break

Session IV: Morning Session II

12:40 Lunch Break

14:00 Optional Excursion

18:30 Conference Dinner

Friday 22 January

Session V: Morning Session I

10:30 Coffee Break

Session VI: Morning Session II

12:40 Lunch Break

Session VII: Afternoon Session I

15:40 Coffee Break

Session III: Afternoon Session II