1. Recent Voyager 1 data indicate that on 25 August 2012 at a distance of 121.7 AU from the Sun, sudden and unprecedented intensity changes were observed in anomalous and galactic cosmic rays. Issue 9 (12th May 2013) Authors: Webber, W. R.; McDonald, F. B. Journal: Geophysical research letters Issue: Volume 40:Issue 9(2013:May) Page Start: 1665 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗