CDHY Initiative

Working together to understand the sites of extreme acceleration

Open Talk Series

The CDHY Open Talk Series consists of introductory lectures and focused seminars on current topics in high-energy astrophysics. Talks are followed by an informal discussion led by the speaker and one of the members; slides and suggested readings are collected with each talk below.

Recordings of most talks are available on our YouTube channel.

  • 2026Galactic Cosmic Rays: Measurements and Theory; The MeV Gamma-Ray Sky 17 talks
  • 2025Extreme Astronomical Objects from X-rays to Gamma Rays 10 talks
  • 2024Particle Acceleration in Extreme Accelerators; Microquasars 13 talks
  • 2023Multi-Messenger II: Cosmic Rays and Gamma Rays 10 talks
  • 2022Gamma-Ray Sources: From Pulsar Winds to AGN; Multi-Messenger I: Neutrinos and Gravitational Waves 18 talks
  • 2021Extreme Accelerators: Mechanisms, Shocks and Jets; Gamma-Ray Bursts and Neutron-Star Mergers; Ultra-High-Energy Gamma Rays and Galactic PeVatrons 14 talks