Bursty bulk flow intrusion to the inner plasma sheet as inferred from auroral observations

The physics of the interaction of bursty bulk flows (BBFs) with the near‐Earth plasma is not yet known in detail. We address this issue with comprehensive observations made with the MIRACLE network during a well‐documented streamer event. In this case an equatorward intruding auroral streamer inclined from northwest (NW) to southeast (SE) reached the region of the proton oval of 486 nm (H β ) luminosity. This H β band is assumed to map poleward …