1. 28 Oct 2003 particle stream timing X17 flare in 10 486 Solar Release Time (SRT) Arrival at 1AU First radio signature (corrected) 10:5011:01:20 (<800 MHz) 10:58 (>800 MHz) Impulsive electrons11:05 (11:00-11:09)11:21-11:26 Relativistic protons11:07 (11:04-11:10)11:13-11:19 Gradual electrons11:19 (11:14-11:25)11:25:11:36 after Klassen, Krucker, et al. 2005, JGR 110, A09S04

2. Overview all sources 11-12 UT Gap 30 km/s Red: TS Yellow: continuum with fiber bursts 35-50 Mm Pmin

3. Fibers during relativistic (GLE) proton injection 300 MHz 800 11:12 11:13 11:14 UT AIP 300 800 MHz 1300 11:14 11:15 11:16 11:17 11:18 UT 11:19 AIP AOO Courtesy: M. Karlicky (time derived radio spectra)

4. Field lines selected by fiber burst sources (I) 11:13-11:14 and 11:17-11:19 Cartesian potential field extrapol. Method: A&A 435, 1137 (2005) Cubes: NRH source sites of fiber bursts

5. Field lines selected by fiber burst sources (II) Spheric potential field extrapol. (Schrijver & DeRosa 2003)

6. Magnetic field around AR 10486 150-300 Mm AR 10486 near AR 10493 acc. to Schrijver & DeRosa 2003

7. Multi-loop structure during GLE proton injection Essential mean field structures selected by fiber bursts Main flaring arcade S N