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Estimating Gradients Of Physical Fields In Space
Shen, Chao; Zhou, Yufei
This study focuses on the development of a multi-point technique for future constellation missions, aiming to measure gradients at various orders, in particular the linear and quadratic gradients, of a general field. It is well established that, in order to estimate linear gradients, the spacecraft must not lie on a plane. Through analytical explo…
Does High-Latitude Ionospheric Electrodynamics Exhibit Hemispheric Mirror Symmetry?
Hatch, Spencer Mark; Vanhamäki, Heikki; Magnus Laundal, Karl +6 more
Ionospheric electrodynamics is a problem of mechanical stress balance mediated by electromagnetic forces. Joule heating (the total rate of frictional heating of thermospheric gases and ionospheric plasma) and ionospheric Hall and Pedersen conductances comprise three of the most basic descriptors of this problem. More than half a century after iden…
Impact Ionization Double Peaks Analyzed In High Temporal Resolution On Solar Orbiter
Meyer-Vernet, Nicole; Mann, Ingrid; Vaverka, Jakub +6 more
Solar Orbiter is equipped with electrical antennas performing fast measurements of the surrounding electric field. The antennas register high-velocity dust impacts through the electrical signatures of impact ionization. Although the basic principle of the detection has been known for decades, the understanding of the underlying process is not comp…
Low-Frequency Solar Radio Type II Bursts And Their Association With Space Weather Events During The Ascending Phase Of Solar Cycle 25
Ndacyayisenga, Theogene; Uwamahoro, Jean; Uwamahoro, Jean Claude +5 more
Type II solar radio bursts are signatures of the coronal shocks and, therefore, particle acceleration events in the solar atmosphere and interplanetary space. Type II bursts can serve as a proxy to provide early warnings of incoming solar storm disturbances, such as geomagnetic storms and radiation storms, which may further lead to ionospheric eff…
The Cluster Spacecrafts' View Of The Motion Of The High-Latitude Magnetopause
Darrouzet, Fabien; Plaschke, Ferdinand; Grimmich, Niklas +10 more
The magnetopause is the boundary between the interplanetary magnetic field and the terrestrial magnetic field. It is influenced by different solar-wind conditions, which lead to a change in the shape and location of the magnetopause. The interaction between the solar wind and the magnetosphere can be studied from in situ spacecraft observations. M…
Scalar-Potential Mapping Of The Steady-State Magnetosheath Model
Toepfer, Simon; Narita, Yasuhito; Schmid, Daniel
The steady-state magnetosheath model has various applications for studying the plasma and magnetic field profile around the planetary magnetospheres. In particular, the magnetosheath model is analytically obtained by solving the Laplace equation for parabolic boundaries (bow shock and magnetopause). We address the question, how can we utilize the …