loading page

Duration of Individual Relativistic Electron Microbursts: A Probe Into Their Scattering Mechanism
  • Mykhaylo Shumko,
  • Lauren W Blum,
  • Alexander B. Crew
Mykhaylo Shumko
NASA's Goddard Space Flight Center

Corresponding Author:[email protected]

Author Profile
Lauren W Blum
University of Colorado Boulder
Author Profile
Alexander B. Crew
The Johns Hopkins University Applied Physics Laboratory
Author Profile


We used the Solar Anomalous and Magnetospheric Particle Explorer (SAMPEX) to identify and quantify the duration of relativistic, >1 MeV, electron microbursts. A typical relativistic microburst has a ~100 millisecond (ms) duration, and the interquartile range of the duration distribution is 70-140 ms. We investigated trends in the microburst duration as a function of geomagnetic activity, L-shell, and magnetic local time (MLT). The clearest trend is in MLT: the median microburst duration doubles from 80 milliseconds at midnight to 160 milliseconds noon MLT. This trend is similar to the whistler mode chorus rising tone element duration trend, suggesting a possible relationship.
08 Sep 2021Published in Geophysical Research Letters volume 48 issue 17. 10.1029/2021GL093879