High-energy astrophysics

Definition

High-energy astrophysics is the study of the processes that occur within stars, black holes and supernovae. These processes can be monitored by measuring the high-energy electromagnetic radiation and particles that they emit including x-rays, ultraviolet light and gamma rays. These observations are supplemented with computer simulations.

Latest Research and Reviews

  • 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 |

    The amplification of waves reflected from a rotating obstacle, or superradiance, has been predicted in hydrodynamics and black-hole physics. An experiment with rotating vortex flows confirms this phenomenon.

    • Theo Torres
    • , Sam Patrick
    • , Antonin Coutant
    • , Maurício Richartz
    • , Edmund W. Tedford
    •  & Silke Weinfurtner
  • 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
  • Research |

    Using an innovative method, the mass of a pulsar can be constrained using the maximum ‘glitch’ in the star’s rotational frequency: the bigger the glitch, the lower the mass. This method is used to estimate the mass of all observed glitchers.

    • P. M. Pizzochero
    • , M. Antonelli
    • , B. Haskell
    •  & S. Seveso

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