butterfly distribution

Gan, L., Li, W., Ma, Q., Artemyev, A., & Albert, J. (2020). Unraveling the Formation Mechanism for the Bursts of Electron Butterfly Distributions: Test Particle and Quasilinear Simulations. Geophysical Research Letters, 47, e2020GL090749. http://doi.org/https://doi.org/10.1029/2020GL090749 (Original work published October 2020)
Artemyev, A., Agapitov, O., Mozer, F., & Spence, H. (2015). Butterfly pitch-angle distribution of relativistic electrons in the outer radiation belt: Evidence of nonadiabatic scattering. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2014JA020865 (Original work published May 2015)
Xiong, Y., Chen, L., Xie, L., Fu, S., Xia, Z., & Pu, Z. (2017). Relativistic electron\textquoterights butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions. Geophysical Research Letters. http://doi.org/10.1002/2017GL072558 (Original work published May 2017)