Results 41 to 50 of about 10,563 (231)

Static magnetic field models consistent with nearly isotropic plasma pressure [PDF]

, 1987
Using the empirical magnetospheric magnetic field models of Tsyganenko and Usmanov (TU), we have determined the self-consistent plasma pressure gradients and anisotropies along the midnight meridian in the near-Earth magnetosphere.
Kivelson, Margaret G., Spence, Harlan E., Walker, Raymond J.   +2 more
core   +3 more sources

Triggering magnetar outbursts in 3D force-free simulations [PDF]

, 2019
In this letter, we present the first 3D force-free general relativity simulations of the magnetosphere dynamics related to the magnetar outburst/flare phenomenology. Starting from an initial dipole configuration, we adiabatically increase the helicity by
Carrasco, Federico, Palenzuela, Carlos, Pons, Jose A., Viganò, Daniele   +3 more
core   +3 more sources

Current instabilities in the pulsar magnetosphere [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractPulsars are rotating neutron stars with strong magnetic dipole fields (B = 104 − 109T), and high induced surface potentials (ca. 1014V). A strong charged particle current is driven out of the polar cap. It returns along an equatorial current sheet.
Axel Jessner, Harald Lesch, Michael Kramer   +2 more
openaire   +1 more source

Magnetospheric and ionospheric vortices response to negative solar wind dynamic pressure pulse

Frontiers in Astronomy and Space Sciences
In this work, we present two individual cases showing that a negative solar wind dynamic pressure pulse can lead to magnetospheric decompression and generate a clockwise vortex in the duskside magnetosphere.
Huayu Zhao, Huayu Zhao, Huigen Yang, Zejun Hu, Dehong Huang, Bin Li, Beichen Zhang, Jianjun Liu   +7 more
doaj   +1 more source

Instability of the magnetosphere-ionosphere convection and formation of auroral arcs [PDF]

Annales Geophysicae, 1994
In this paper we study an instability of the plasma moving towards the Earth near the inner plasma sheet boundary. We include both the interchange instability of the plasma sheet and the magnetosphere-ionosphere interaction instability caused by an ...
A. E. Kozlovsky, W. B. Lyatsky
doaj   +1 more source

Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm [PDF]

, 2017
Ionospheric conductance plays an important role in regulating the response of the magnetosphere‐ionosphere system to solar wind driving. Typically, models of magnetosphere‐ionosphere coupling include changes to ionospheric conductance driven by extreme ...
Dimant, Y., Liu, J., Lyon, J.G., Merkin, V., Oppenheim, M., Sitnov, M.I., Stephens, G.K., Toffoletto, F., Wang, W., Wiltberger, M., Zhang, B.   +10 more
core   +1 more source

Current flow in pulsar magnetospheres

The Astrophysical Journal, 1976
When particle flow is mainly outward through the light cylinder of a rotating pulsar magnetosphere, the resulting current flow leads to very large potential drops along field lines wherever $Omega$xB vanishes (as suggested by Holloway). These occur no matter what the sign of the charge above the magnetic polar cap. For fast pulsars such a gap potential
A. Cheng, M. Ruderman, P. Sutherland
openaire   +1 more source

Ionospheric control of the magnetosphere: conductance [PDF]

Annales Geophysicae, 2004
It is well known that the ionosphere plays a role in determining the global state of the magnetosphere. The ionosphere allows magnetospheric currents to close, thereby allowing magnetospheric convection to occur.
A. J. Ridley, T. I. Gombosi, D. L. DeZeeuw   +2 more
doaj   +1 more source

Organization of the magnetosphere during substorms [PDF]

, 2011
The change in degree of organization of the magnetosphere during substorms is investigated by analyzing various geomagnetic indices, as well as interplanetary magnetic field z-component and solar wind flow speed.
Abarbanel, Athanasiu, Aumaitre, Bak, Baker, Chang, Chapman, Chapman, Davies, Eckmann, Feldstein, Freeman, Frey, Gardiner, Golovchanskaya, Horton, K. Rypdal, Kaplan, Kaplan, Klimas, Klimas, Kozelov, Lewis, Mackey, March, March, Marwan, Marwan, Rypdal, Rypdal, Sharma, Sitnov, T. Živković, Takens, Trulla, Tsurutani, Uritsky, Uritsky, Valdivia, Valdivia, Vennestrøm, Vörös, Wanliss, Webber, Živković   +44 more
core   +2 more sources

Auroral turbulence of the ionospheric convection [PDF]

Vestnik MGTU, 2016
The formation of the two-dimensional auroral structures in the cold ionospheric-magnetospheric plasma under convection has been considered. The convection inhomogeneity leads to appearance of the currents across and along the magnetic field lines.
Volkov М. А.
doaj   +1 more source