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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
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
Volume:
6
Pages:
535-543
Host title:
COSMIC RAYS FOR PARTICLE AND ASTROPARTICLE PHYSICS
Publication date:
2011-08-08
Source identifiers:
174742
ISBN:
9789814329026
Keywords:
Pubs id:
pubs:174742
UUID:
uuid:8fbd79e7-b34a-416a-8195-5ab61975f3bd
Local pid:
pubs:174742
Deposit date:
2012-12-19

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