Results 51 to 60 of about 720 (196)
International Journal of Differential Equations, Volume 2013, Issue 1, 2013., 2013 We consider the free boundary problem for current‐vortex sheets in ideal incompressible magnetohydrodynamics. The problem of current‐vortex sheets arises naturally, for instance, in geophysics and astrophysics. We prove the existence of a unique solution to the constant‐coefficient linearized problem and an a priori estimate with no loss of derivatives.
Davide Catania, Helge Holden
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Exploring the Complex Heliotail Boundary by an Extended Level Set Approach
The Astrophysical Journal LettersThere is an ongoing debate regarding the shape of the heliotail. Studies have shown that the heliotail may be “comet-like,” extending for thousands of au. Some previous works defined the heliopause using magnetohydrodynamic variables, which only serve as
C. Onubogu +4 more
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Spherical Harmonic Representation of Energetic Neutral Atom Flux Components Observed by IBEX
The Astrophysical Journal Supplement Series, 2023 The Interstellar Boundary Explorer (IBEX) images the heliosphere by observing energetic neutral atoms (ENAs). The IBEX-Hi instrument on board IBEX provides full-sky maps of ENA fluxes produced in the heliosphere and very local interstellar medium through
P. Swaczyna +2 more
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Kinetic Theory of Drift‐Mirror Mode
Geophysical Research Letters, Volume 51, Issue 18, 28 September 2024.Abstract We present a nonlocal gyrokinetic theory for the drift‐mirror mode in high‐β $\beta $ anisotropic plasmas. Here, β $\beta $ represents the ratio of plasma pressure to magnetic pressure. The equilibrium distribution is established self‐consistently via guiding‐center Hamiltonian theory.
Yao Yao +3 more
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Pickup Ions beyond the Heliopause
The Astrophysical Journal, 2019 Abstract Fluxes of energetic neutral atoms (ENAs) with energies greater than 1 KeV measured by the Interstellar Boundary Explorer (IBEX) are predominantly created by charge exchange of interstellar neutral atoms with hot, nonthermal (pickup) ions. Since the properties of pickup ions (PUIs) depend on the place of their birth, they bear an
V. Roytershteyn +2 more
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Journal of Geophysical Research: Space Physics, Volume 129, Issue 7, July 2024.Abstract This research examines the plasma processes under penetration of the plasma clouds (plasmoids) across the magnetopause which is modeled as a tangential discontinuity (TD). Cases with the parallel magnetic field in both sides out of the TD are under investigation.
A. S. Lipatov +3 more
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The Astrophysical JournalWe introduce an updated, time-dependent treatment to the split-tail (“croissant-like”) heliosphere model with data-driven solar wind conditions at 1 au to study the evolution of the heliosphere with solar-cycle variations in plasma speed, plasma density,
C. Onubogu +6 more
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Flight Times to the Heliopause Using a Combination of Solar and Radioisotope Electric Propulsion [PDF]
, 2011 We investigate the interplanetary ight of a low-thrust space probe to the heliopause, located at a distance of about 200AU from the Sun. Our goal was to reach this distance within the 25 years postulated by ESA for such a mission (which is less ...
Dachwald, Bernd +3 more
core
Transient shocks beyond the heliopause
Journal of Physics: Conference Series, 2015 The heliopause is a rich, dynamic surface affected by the time-dependent solar wind. Stream interactions due to coronal mass ejections (CMEs), corotating interaction regions (CIRs), and other transient phenomena are known to merge producing global merged interaction regions (GMIRs).
R L Fermo, N V Pogorelov, L F Burlaga
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Space science: Beyond the heliopause [PDF]
Nature, 2015 Roger D. Launius savours a masterful account, by a veteran of interplanetary space science, of the Voyager probes' mission to the giant planets.
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