Particle astrophysics

Particle astrophysics is the study of fundamental particles travelling through space, particularly those that reach the Earth. These cosmic rays include photons, protons, alpha particles and neutrinos. Some of these decay to other particles in the atmosphere, while neutrinos can pass through the entire Earth without being absorbed.

Latest Research and Reviews

News and Comment

  • News & Views |

    Lorentz symmetry violations might produce anomalies in the propagation of particles travelling through the Universe. The IceCube Collaboration performed the most precise search for such an effect with neutrinos, finding no sign of anomalous behaviour.

    • Giulia Gubitosi
    Nature Physics 18, 1264-1265
  • Comments & Opinion |

    After five years of construction, the Large High Altitude Air Shower Observatory is nearing completion, but already returning exciting results on the origin of cosmic rays, explains Principal Investigator Zhen Cao.

    • Zhen Cao
  • Comments & Opinion |

    Identifying the sources of high-energy cosmic neutrinos has been a challenge. Considering frequentist and Bayesian arguments, as well as the special conditions found in neutrino astronomy, we discuss whether to believe current 3σ observations.

    • Marek Kowalski
    Nature Astronomy 5, 732-734
  • Editorial |

    Be it neutrinos, ultra-high-energy photons or gravitational waves, new cosmic messengers have expanded the available discovery space of astronomy by exploring previously inaccessible astrophysical environments.

  • Research Highlights |

    In May 2011, the Alpha Magnetic Spectrometer (AMS-02) arrived on the International Space Station. Despite the difficulties of running a particle physics experiment in space, AMS-02 has produced exciting results related to dark matter and cosmic rays.

    • Zoe Budrikis