A very local interstellar spectrum for galactic electrons
We present a new local interstellar spectrum for cosmic ray e lectrons over an energy range from 1 MeV to 70 GeV. Below (0.8±0.2) GeV it has a power law form, E−(1.55±0.05), with E kinetic energy, which is consistent with previous studies. This is derived from comp aring Voyager 1 electron data observed during 2010 with a comprehensive modulation model. However, reproduci ng the PAMELA electron spectrum observed at Earth during late 2006 and to address an unexpected increase in the electron spectrum between ∼2 GeV and up to ∼20 GeV, a spectral index of −(3.3±0.1) instead of the reported −(3.18±0.05) was found for this energy range. This feature cannot be caused by solar modulation or a y other process inside the heliosphere.