October CME Shock Event Hudson, Paral, Kress, Turner SWE ACE Solar Wind Electron Proton Alpha Monitor K0>5-Min UT 8 Oct - 12UT 9 Oct 2013 n~ 55/cc v~660 km/s Replaced by ARTEMIS data – courtesy Drew Turner to fill data gap with higher time resolution for LFM-RCM simulations (6 sec input)

LFM-RCM Simulated M’pause Compression ARTEMIS solar wind inputACE solar wind input solar Mar ‘13 09 Oct ‘13

LFM-RCM Simulated Ephi along track of RBSP/A&B Oct 8 ‘13

LFM-RCM Simulated Ephi along track of RBSP/A&B Oct 8 ‘13 RBSP/B (blue) leads RBSP/A (red)

EFW data – FFT power at B (near apogee) at lower frequency than A at 2130 (green); A has moved to apogee by 2253 (aqua) - peak power shifts to lower frequency- FLR More power, lower f near apogee a) b)c) a) – c) refer to animation snapshots, next slide

Equatorial plane animation of E_phi showing m=2 mode structure; persistent E_phi<0=westward following shock accelerates electrons a) b) c) Shock arrival a); Propagates nightside b); Drop in Psw causes m’pause expansion c) reverse Ephi from a)

Equatorial plane animation of E_phi showing m=2 mode structure; persistent E_phi<0=west accel el

LFM-RCM ULF wave power, ARTEMIS input  Simulated m’pause 

8 Oct 1317 Mar 13 Simulated Magnetopause Shadowing Loss for 17 March and 8 Oct

Conclusions to Date for 8 Oct 13 E_phi ~ 10 mV/m common with CME shocks Energetic source population in outer zone is critical for significant drift resonant transport to produce new belts: electron v_phi ~ V_alfven req 8 Oct 2013 had both: source pop & Ephi 10mV/m Not a large Ephi event, persistent ULF oscillations: Comparable: 17 March 2013 simulations~10 mV/m ULF wave mode structure consistent with FLRs: Lower f at higher L favors drift resonance w/lower energy electrons at higher L, remaining drift res with higher f modes as they are transported inward; inward m’pause motion causes flux dropout at high L as obs Reference: Hudson et al., GRL, 2014 for Sept-Oct 2012 dropout simulations; GEM RBW focus group presentation - Mon 6/16 for 17 March & 8 Oct 13 results

Extra Slides Comparison of 17 March ’13 with 8 Oct ’12 ULF wave power, see Hudson et al., GRL, 2014

ULF Wave Power Comparison 17 March & 8 October ‘13 17 March 138 Oct 12