7 papers
Extreme, transient bursts of energy in the auroral ionosphere. II. A magnetotail dipolarization event
Magnus F Ivarsen, Yukinaga Miyashita, Brian Pitzel +5
We report ground-based coherent VHF radar observations of extreme turbulent field-structures detected in coincidence with a magnetospheric substorm-associated magnetotail dipolariz…
Extreme, transient bursts of energy in the auroral ionosphere. I. Predictive radar tracking
Magnus F Ivarsen, Jean-Pierre St-Maurice, Yukinaga Miyashita +6
Three-meter Farley-Buneman irregularities observed by the ICEBEAR VHF radar organize into km-scale clusters whose apparent motion is governed by the electric field mapped from the…
Excursion-set structure factor of the auroral electric field
Magnus F Ivarsen, Kaili Song, Jean-Pierre St-Maurice +1
We treat coherent radar echoes from aurorae as a finite point process and measure its structure factor from pairwise echo separations. Backscatter requires electron drifts t…
Kinetic renormalization of auroral turbulence
Magnus F Ivarsen, Kaili Song, Luca Spogli +19
Driven-dissipative systems often exhibit self-organization in the form of coherent dissipative structures. However, observing such critical states in natural plasmas remains elusiv…
A Characteristic Signature of Magnetospheric Wave-Particle Interactions Found in the Turbulent E-region
Magnus F Ivarsen, Yukinaga Miyashita, Jean-Pierre St-Maurice +16
Plasma waves in the magnetosphere scatter electrons, causing them to precipitate into Earth's atmosphere, imparting their temporal characteristics to diffuse auroras. In a case stu…
Eastward Transients in the Dayside Ionosphere II: A Parallel-plate Capacitor-Like Effect
Magnus F Ivarsen, Jean-Pierre St-Maurice, Glenn C Hussey +5
During the 23 April 2023 geospace storm, we observed chorus wave-driven, energetic particle precipitation on closed magnetic field lines in the dayside magnetosphere. Simultaneousl…