http://arxiv.org/abs/1803.01009
The data on the inclusive flux of cosmic positrons and electrons ($e^++e^{-}$) have been recently collected from GeV to tens of TeV energies by several experiments with unprecedented precision. In addition, the Fermi-LAT Collaboration has provided a new energy spectrum for the upper bounds on the $e^++e^{-}$ dipole anisotropy. This observable can bring information on the emission from local Galactic sources, that are notably measured with high precision at radio frequencies from tens of MHz up to a few GHz. In this paper we present a multi-messenger study of the emission and propagation of $e^-$ and $e^+$ in the Galaxy from these SNRs that is compatible with their radio data, the $e^++e^{-}$ flux and the $e^++e^{-}$ dipole anisotropy. As well as finding strong radio constraints for the Vela YZ and Cygnus Loop $e^-$ emission, we succeed to fit the $e^+ + e^-$ spectrum on many energy decades while considering the proper systematic uncertainties on the energy scale of the different data sets. For the first time, we show that constraints are also imposed by the data on the $e^+ + e^-$ anisotropy, which opens the opportunity of doing astronomy with charged lepton CRs.
S. Silvia Manconi, M. Mattia Di Mauro and F. Fiorenza Donato
Tue, 6 Mar 2018
22/70
Comments: N/A
You must be logged in to post a comment.