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The 'PAMELA anomaly' indicates a nearby cosmic ray accelerator

Abstract:

We discuss the recently observed `excesses' in cosmic ray electron and positron fluxes which have been widely interpreted as signals of dark matter. By considering the production and acceleration of secondary electrons and positrons in nearby supernova remnants, we predict an additional, harder component that becomes dominant at high energies. The unknown spatial distribution of the supernova remnants introduces a stochastic uncertainty which we estimate analytically. Fitting the prediction f...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Role:
Author
Volume:
6
Pages:
535-543
Publication date:
2011-08-08
URN:
uuid:8fbd79e7-b34a-416a-8195-5ab61975f3bd
Source identifiers:
174742
Local pid:
pubs:174742
ISBN:
978-981-4329-02-6

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