Very-high-energy (VHE) gamma-ray astroparticle physics is a relatively young field, and observations over the past decade have surprisingly revealed almost two hundred VHE emitters which appear to act as cosmic particle accelerators. These sources are an important component of the Universe, influencing the evolution of stars and galaxies. At the same time, they also act as a probe of physics...
Ultra-high-energy cosmic rays are unique probes of both cosmic phenomena and particle interactions at energies well beyond what is achievable with human-made accelerators. In the past decade, much progress has been made in their detection and study, notably also with the Pierre Auger Observatory. Definitive answers on questions such as their cosmic sources and precise models for hadronic...
In the past few years, gravitational waves have proved an incredible tool to investigate the Universe. The third LIGO-Virgo observation run was concluded last Spring and results from its first half, O3a, are now available. I will give an overview of these new events and their implications, focusing on the so-called "special events", whose unexpected features require us to question our current...
Direct searches for Dark Matter in the form of WIMP-like particles continue to push toward the neutrino floor. Researchers in the Netherlands play a leading role in the XENON class of detectors. The XENON1T experiment has finished its data-taking phase, reaching an unprecedented sensitivity of $4\cdot10^-{47}$ cm$^2$ spin-independent WIMP-nucleon scattering cross section at 25~GeV WIMP mass....
