Results 21 to 30 of about 10,563 (231)

Next generation magnetic field measurements from low-earth orbit satellites enable enhanced space weather operations

Frontiers in Astronomy and Space Sciences, 2022
Large-scale current systems in the ionosphere and the magnetosphere are intimately controlled by the solar wind-magnetosphere interaction and the magnetosphere-ionosphere coupling.
Guan Le, Delores J. Knipp, Lutz Rastätter, Gang Lu, Dogacan Su Ozturk, James A. Slavin, Astrid Maute, Jeffrey Klenzing, Shasha Zou, Jared R. Espley, Michael Purucker, Mojtaba Akhavan-Tafti, Gang Kai Poh, Gang Kai Poh, Zihan Wang   +14 more
doaj   +1 more source

On the role of neutral flow in field-aligned currents [PDF]

Annales Geophysicae, 2018
In this brief note we explore the role of the neutral atmosphere in magnetosphere–ionosphere coupling. We analyze momentum balance in the ion rest frame to form hypotheses regarding the role of neutral momentum in the lower ionosphere during ...
A. J. Mannucci, O. P. Verkhoglyadova, X. Meng, R. McGranaghan, R. McGranaghan   +4 more
doaj   +1 more source

A periodically active pulsar giving insight into magnetospheric physics [PDF]

, 2006
PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5-10 days long. However, the radio emission switches off in less than 10 seconds and remains undetectable for the next 25-35 days, then it switches on ...
Jordan, C. A., Kramer, M., Lorimer, D. R., Lyne, A. G., O'Brien, J. T.   +4 more
core   +2 more sources

Current Flows in Pulsar Magnetospheres

Chinese Journal of Astronomy and Astrophysics, 2006
The global structure of the current flows in pulsar magnetospheres is investigated, with rough calculations of the elements in the magnetospheric circuit. It is emphasized that the potential of critical field lines is the same as that of interstellar medium, and that the pulsars whose rotation axes and magnetic dipole axes are parallel should be ...
Xu, Ren-Xin, Cui, Xiao-Hong, Qiao, Guo-Jun   +2 more
openaire   +2 more sources

Modeling of ion dynamics in the inner geospace during enhanced magnetospheric activity [PDF]

Annales Geophysicae, 2016
We investigate the effect of magnetic disturbances on the ring current buildup and the dynamics of the current systems in the inner geospace by means of numerical simulations of ion orbits during enhanced magnetospheric activity.
C. Tsironis, A. Anastasiadis, C. Katsavrias, C. Katsavrias, I. A. Daglis   +4 more
doaj   +1 more source

Magnetospheric signatures of ionospheric density cavities observed by cluster [PDF]

, 2015
AJBR ackowledges support from STFC under consolidated grant ST/K000993/1.We present Cluster measurements of large amplitude electric fields corre- lated with intense downward field-aligned currents, observed during a nightside crossing of the auroral ...
Aikio, Aikio, Balogh, Blixt, Cran-McGreehin, Doe, Doe, Gustafsson, Ishii, Karlsson, Lysak, Marklund, Michell, Russell, Russell, Streltsov, Streltsov, Walén, Wright, Wright, Zettergren   +20 more
core   +4 more sources

A Study of the Performances of Widely Used External Magnetic Field Models in the Outer Zone of the Earth's Radiation Belts by Comparing the Field Observations From Van Allen Probe‐A and the Model Estimations

Space Weather, 2021
Using magnetic field observations from Van Allen Probe‐A (VAP‐A), we evaluated the performances of 13 widely used external magnetic field models in the Earth's outer radiation belt region in detail.
Xiaochao Yang, Li Wang
doaj   +1 more source

Magnetospheric response to magnetosheath pressure pulses: A low pass filter effect [PDF]

, 2013
. We present observations from the magnetopause to the ground during periods of large amplitude, transient dynamic pressure pulses in the magnetosheath.
Archer, MO, Eastwood, JP, Horbury, TS, Weygand, JM, Yeoman, TK   +4 more
core   +1 more source

3-D force-balanced magnetospheric configurations [PDF]

Annales Geophysicae, 2004
The knowledge of plasma pressure is essential for many physics applications in the magnetosphere, such as computing magnetospheric currents and deriving mag-netosphere-ionosphere coupling.
S. Zaharia, S. Zaharia, C. Z. Cheng, K. Maezawa   +3 more
doaj   +1 more source

MMS observations of electron-scale filamentary currents in the reconnection exhaust and near the X line [PDF]

, 2016
© 2016. American Geophysical Union. All Rights Reserved.We report Magnetospheric Multiscale observations of macroscopic and electron-scale current layers in asymmetric reconnection.
Avanov, LA, Burch, JL, Cassak, PA, Chen, LJ, Daughton, W, Dorelli, JC, Drake, JF, Eastwood, JP, Ergun, RE, Fujimoto, M, Gershman, DJ, Giles, BL, Gosling, JT, Khotyaintsev, Y, Lavraud, B, Lindqvist, PA, Moore, TE, Mozer, FS, Oka, M, Paterson, W, Phan, TD, Pollock, C, Russell, CT, Saito, Y, Shay, MA, Strangeway, RJ, Torbert, RB, Wang, S, Wilder, FD, Øieroset, M   +29 more
core   +3 more sources