Short-term variability of inner-source pickup ions at 1 AU - SOHO/CELIAS observations L. Berger, C. Drews, A. Taut and R. F. Wimmer-Schweingruber A&A, 576 (2015) A54 Published online: 27 March 2015 DOI: 10.1051/0004-6361/201425116