Is the PAMELA anomaly caused by the supernova explosions near the Earth?

Preprint

10 April 2009

preprint
Published by arXiv in arXiv

Abstract

We show that recent supernova explosion(s) in a dense gas cloud (DC) near the Earth can be attributed to the electron/positron excesses observed with PAMELA and ATIC. Protons are accelerated around the supernova remnant (SNR). Electrons and positrons are created through hadronic interactions insides the DC. Their spectrum is harder than that of the background because the SNR spends much time in a radiative phase. Our model predicts that the anti-proton flux dominates that of the background for ~>100 GeV, while the gamma-ray and neutrino signals could currently be absent because the SNR has destroyed the DC.

Keywords

SUPERNOVA EXPLOSIONS
RECENT SUPERNOVA
PAMELA ANOMALY
ANOMALY CAUSED
MODEL PREDICTS
PROTON
EARTH

All Related Versions

Version 1, 2009-03-31, ArXiv
Version 2, 2009-04-10, ArXiv
Version 3, 2009-08-29, ArXiv
Published version: Physical Review D, 80 (6), 063003.

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