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MESSENGER has observed a lot of dawn-dusk asymmetries in Mercury's magnetotail, such as the asymmetries of the cross-tail current sheet thickness and the occurrence of flux ropes, dipolarization events and energetic electron injections. In…

MESSENGER magnetometer data show that Mercury's magnetic field is not only exceptionally weak but also has a unique geometry. The internal field resembles an axial dipole that is offset to the North by 20% of the planetary radius. This…

Earth and Planetary Astrophysics · Physics 2017-01-19 Johannes Wicht , Daniel Heyner

The magnetotail current sheet configuration determines magnetic reconnection properties that control the substorm onset, one of the most energetic phenomena in the Earth's magnetosphere. The quiet-time current sheet is often approximated as…

Space Physics · Physics 2022-03-31 Xin An , Anton Artemyev , Vassilis Angelopoulos , Andrei Runov , San Lu , Philip Pritchett

Earth's magnetotail region provides a unique environment to study plasma turbulence. We investigate the turbulence developed in an exhaust produced by magnetic reconnection at the terrestrial magnetotail region. Magnetic and velocity…

The magnetotail current sheet's spatial configuration and stability control the onset of magnetic reconnection - the driving process for magnetospheric substorms. The near-Earth current sheet has been thoroughly investigated by numerous…

Space Physics · Physics 2023-09-29 S. R. Kamaletdinov , A. V. Artemyev , A. Runov , V. Angelopoulos

We analyze a magnetotail reconnection onset event on 3 July 2017 that was observed under otherwise quiescent magnetospheric conditions by a fortuitous conjunction of six space and ground-based observatories. The study investigates the…

Low frequency turbulence in Saturn's magnetosheath is investigated using in-situ measurements of the Cassini spacecraft. Focus is put on the magnetic energy spectra computed in the frequency range $\sim[10^{-4}, 1]$Hz. A set of 42 time…

Space Physics · Physics 2016-11-28 L. Z. Hadid , F. Sahraoui , K. H. Kiyani , A. Retinò , R. Modolo , P. Canu , A. Masters , M. K. Dougherty

Magnetic reconnection X-lines have been observed to be more common duskward of midnight. Thin current sheets have also been postulated to be a necessary precondition for reconnection onset. We take advantage of the MMS tetrahedral formation…

Space Physics · Physics 2021-12-10 A. J. Rogers , C. J. Farrugia , R. B. Torbert , T. J. Rogers

We present the first statistical study of magnetic structures and associated energy dissipation observed during a single period of turbulent magnetic reconnection, by using the \textit{in-situ} measurements of the Magnetospheric Multiscale…

Space Physics · Physics 2020-10-28 K. Bergstedt , H. Ji , J. Jara-Almonte , J. Yoo , R. E. Ergun , L. -J. Chen

Magnetohydrodynamic turbulence is a ubiquitous phenomenon in solar physics, plasma physics and astrophysics and governs many properties of the flows of well-conductive fluids. Recently, conflicting spectral slopes for the inertial range of…

Astrophysics of Galaxies · Physics 2015-06-18 Andrey Beresnyak

We investigate turbulence in magnetic reconnection jets in the Earth's magnetotail using data from the Magnetospheric Multiscale spacecraft. We show that signatures of a limited inertial range are observed in many reconnection jets. The…

Space Physics · Physics 2024-01-31 L. Richard , L. Sorriso-Valvo , E. Yordanova , D. B. Graham , Yu. V. Khotyaintsev

In situ spacecraft data on the solar wind show events identified as magnetic reconnection with outflows and apparent "`$X$-lines" $10^{3-4}$ times ion scales. To understand the role of turbulence at these scales, we make a case study of an…

Magnetohydrodynamic turbulence affects both terrestrial and astrophysical plasmas. The properties of magnetized turbulence must be better understood to more accurately characterize these systems. This work presents ideal MHD simulations of…

Fluid Dynamics · Physics 2021-04-28 Forrest W. Glines , Philipp Grete , Brian W. O'Shea

Field-aligned currents in the Earth's magnetotail are traditionally associated with transient plasma flows and strong plasma pressure gradients in the near-Earth side. In this paper we demonstrate a new field-aligned current system present…

Space Physics · Physics 2018-07-04 Sixue Xu , Andrei Runov , Anton Artemyev , Vassilis Angelopoulos , Quanming Lu

We carry out particle-in-cell simulations of complex current sheets of the family of analytically found Vlasov--Maxwell equilibria that model a collisionless magnetopause and allow for arbitrary energy distributions and countercurrents of…

Plasma Physics · Physics 2024-12-24 Anton Nechaev , Mikhail Garasev , Vladimir Kocharovsky

Spectral properties of a fully compressible solar wind Hall Magnetohydrodynamic plasma are investigated by means of time dependent three dimensional Hall MHD simulations. Our simulations, in agreement with spacecraft data, identify a…

Space Physics · Physics 2015-05-14 Dastgeer Shaikh , G. P. Zank

The Earth's magnetotail, located on the night side of the magnetosphere, is a dynamic region where magnetic field energy is released and converted into plasma heating, particle acceleration, and kinetic energy through magnetic reconnection.…

Space Physics · Physics 2025-05-13 Weiqin Sun , Xiao-Jia Zhang , Anton V. Artemyev , Xi Lu , Xinlin Li , Yang Mei , Zheng Xiang , Declan O'Brien

Turbulence in space plasmas usually exhibits two regimes separated by a spectral break that divides the so called inertial and kinetic ranges. Large scale magnetic fluctuations are dominated by non-linear MHD wave-wave interactions…

Plasma Physics · Physics 2021-03-22 Pablo S. Moya , Roberto E. Navarro

We present a comprehensive statistical study of the radial evolution of solar wind turbulence near Mercury's orbit using long-term magnetic field measurements from the MESSENGER mission. Owing to Mercury's highly elliptical orbit and the…

Many in-situ spacecraft observations have demonstrated that magnetic reconnection in the Earth's magnetotail is largely controlled by the pre-reconnection current sheet configuration. One of the most important thin current sheet…

Space Physics · Physics 2022-09-27 Xin An , Anton Artemyev , Vassilis Angelopoulos , Andrei Runov , San Lu , Philip Pritchett
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