- Rager, AC;
- Dorelli, JC;
- Gershman, DJ;
- Uritsky, V;
- Avanov, LA;
- Torbert, RB;
- Burch, JL;
- Ergun, RE;
- Egedal, J;
- Schiff, C;
- Shuster, JR;
- Giles, BL;
- Paterson, WR;
- Pollock, CJ;
- Strangeway, RJ;
- Russell, CT;
- Lavraud, B;
- Coffey, VN;
- Saito, Y
We report Magnetospheric Multiscale observations of electron pressure gradient electric fields near a magnetic reconnection diffusion region using a new technique for extracting 7.5 ms electron moments from the Fast Plasma Investigation. We find that the deviation of the perpendicular electron bulk velocity from E × B drift in the interval where the out-of-plane current density is increasing can be explained by the diamagnetic drift. In the interval where the out-of-plane current is transitioning to in-plane current, the electron momentum equation is not satisfied at 7.5 ms resolution.