Particle astrophysics

Definition

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

  • Research |

    Optical pulsations from a millisecond pulsar that had transitioned from a rotationally powered regime to an accretion disk state have been detected. The optical emission is likely to be due to electron synchrotron emission in a rotation-powered magnetosphere.

    • F. Ambrosino
    • , A. Papitto
    • , L. Stella
    • , F. Meddi
    • , P. Cretaro
    • , L. Burderi
    • , T. Di Salvo
    • , G. L. Israel
    • , A. Ghedina
    • , L. Di Fabrizio
    •  & L. Riverol
  • Research |

    The prompt optical flash produced by the γ-ray burst GRB 160625B is highly linearly polarized, suggesting that it is produced by fast-cooling synchrotron radiation in a large-scale magnetic field.

    • E. Troja
    • , V. M. Lipunov
    • , C. G. Mundell
    • , N. R. Butler
    • , A. M. Watson
    • , S. Kobayashi
    • , S. B. Cenko
    • , F. E. Marshall
    • , R. Ricci
    • , A. Fruchter
    • , M. H. Wieringa
    • , E. S. Gorbovskoy
    • , V. Kornilov
    • , A. Kutyrev
    • , W. H. Lee
    • , V. Toy
    • , N. V. Tyurina
    • , N. M. Budnev
    • , D. A. H. Buckley
    • , J. González
    • , O. Gress
    • , A. Horesh
    • , M. I. Panasyuk
    • , J. X. Prochaska
    • , E. Ramirez-Ruiz
    • , R. Rebolo Lopez
    • , M. G. Richer
    • , C. Román-Zúñiga
    • , M. Serra-Ricart
    • , V. Yurkov
    •  & N. Gehrels
    Nature 547, 425–427
  • Research |

    A positive magneto-thermoelectric conductance is observed in the Weyl semimetal niobium phosphide, suggesting the presence of the elusive mixed axial–gravitational anomaly.

    • Johannes Gooth
    • , Anna C. Niemann
    • , Tobias Meng
    • , Adolfo G. Grushin
    • , Karl Landsteiner
    • , Bernd Gotsmann
    • , Fabian Menges
    • , Marcus Schmidt
    • , Chandra Shekhar
    • , Vicky Süß
    • , Ruben Hühne
    • , Bernd Rellinghaus
    • , Claudia Felser
    • , Binghai Yan
    •  & Kornelius Nielsch
    Nature 547, 324–327
  • Research |

    Ultrarelativistic photons and neutrinos from gamma-ray bursts offer a testbed for quantum gravity effects that would lead to an energy dependence of the travel times. A statistical analysis of astrophysical data shows that this behaviour may have been observed.

    • Giovanni Amelino-Camelia
    • , Giacomo D’Amico
    • , Giacomo Rosati
    •  & Niccoló Loret

News and Comment