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HEP: Pulsars and the highest energy multi-messengers

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Kumiko Kotera, Institute of Astrophysics, Paris
02 December 2015 from 2:30 PM to 3:30 PM
339 Davey Laboratory
Contact Name
Kohta Murase
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Since their discovery more than a hundred years ago, cosmic rays have provided a well of excitement and enigma for particle physicists and astrophysicists, with their colossal energies, and their mysterious extra-solar origins. A connection between cosmic rays and pulsars was suggested in the decades following the discovery of the first pulsar, but was never deeply investigated, in particular at the highest energies. The recent multi-messenger data related to cosmic-rays and the boom in pulsar observations make it timely to dig into this matter now. We explore in this talk the links between cosmic rays and pulsars at the highest energies. In particular, we find that the production of ultrahigh energy cosmic rays in these objects could give a picture that is surprisingly consistent with the latest data from the Auger Observatory. We discuss the signatures associated to such a source model in terms of other messengers (neutrinos and photons at different wavelengths). Using some of these signatures, we elaborate on how cosmic rays and their interactions with the surrounding medium can be used as tools to diagnose the nature of pulsars and their winds.