Duration of Individual Relativistic Electron Microbursts: A Probe Into Their Scattering Mechanism | Zendy

Shumko M. | Zendy; Blum L. W. | Zendy; Crew A. B. | Zendy

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Duration of Individual Relativistic Electron Microbursts: A Probe Into Their Scattering Mechanism

Author(s) -

Shumko M.,

Blum L. W.,

Crew A. B.

Publication year - 2021

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2021gl093879

Subject(s) - microburst , physics , noon , van allen radiation belt , duration (music) , astrophysics , earth's magnetic field , electron , range (aeronautics) , whistler , atmospheric sciences , magnetosphere , meteorology , nuclear physics , magnetic field , wind speed , plasma , materials science , wind shear , quantum mechanics , acoustics , composite material

We used the Solar Anomalous and Magnetospheric Particle Explorer 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 75 milliseconds at midnight to 140 milliseconds noon MLT. This trend is similar to the whistler mode chorus rising tone element duration trend, suggesting a possible relationship.

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