Space Plasma Seminar: Off Equatorial Chorus Waves and Their Implications for the Radiation Belts
Nick Bunch, Stanford University
Tuesday, May 8, 2012, 3:30pm
Magnetospheric chorus waves play an astonishing role in Earth's radiation environment by contributing to both the acceleration and loss of energetic particles. Chorus is an intense whistler mode emission generated near the magnetic equatorial plane throughout the magnetosphere. These waves propagate great distances from their generation region, and are often observed even at ground level. As chorus propagates away from its source region toward higher latitudes it resonantly interacts with electrons of increasing energy, and helps to regulate the flux of the outer radiation belt. Despite the controlling effect of off-equatorial chorus on the most energetic radiation belt electrons (>MeV), characterization of chorus to date has focused on the equatorial region. This talk will focus on recent results concerning characterization of chorus in the off-equatorial region, advancements toward predictive capabilities, and the influence of chorus waves on dynamics of the radiation belts.