Results 91 to 100 of about 11,853 (228)

First Magnetic Field Detection on a Class I Protostar [PDF]

, 2009
Strong stellar magnetic fields are believed to truncate the inner accretion disks around young stars, redirecting the accreting material to the high latitude regions of the stellar surface.
Covey, Kevin R., Doppmann, Greg W., Greene, Thomas P., Johns-Krull, Christopher M.   +3 more
core   +1 more source

Simultaneous Compressive Kinetic‐Scale Fluctuations and Second‐Harmonic Proton Cyclotron Waves Inside a Martian Magnetosheath Structure

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Mars directly interacts with the solar wind and hosts a complex plasma‐wave environment. Using MAVEN observations, we identify an event in the dusk‐side Martian magnetosheath where strongly compressive sub‐cyclotron kinetic‐scale fluctuations coexist with second‐harmonic proton cyclotron waves (PCWs).
Jintian Yang, Song Fu, Xiaotong Yun, Taifeng Jin, Hui Zhang, Shuyue Pang, Yuequn Lou, Longfei Jia, Yibin Zhao, Yi Qin, Binbin Ni   +10 more
wiley   +1 more source

Magnetosphere-ionosphere coupling currents in Jupiter’s middle magnetosphere: dependence on the effective ionospheric Pedersen conductivity and iogenic plasma mass outflow rate [PDF]

Annales Geophysicae, 2003
The amplitude and spatial distribution of the coupling currents that flow between Jupiter’s ionosphere and middle magnetosphere, which enforce partial corotation on outward-flowing iogenic plasma, depend on the values of the effective Pedersen ...
J. D. Nichols, S. W. H. Cowley
doaj   +1 more source

Magnetic Signatures of a Plasma Wake Behind the Swarm Satellites

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract This study provides first observational evidence of a plasma wake behind ESA's Swarm satellites, manifesting itself by a brief magnetic field strength spike and bipolar field variations in transverse direction. These magnetic signatures occur only near the dip‐equator where the magnetic declination is close to zero.
Chao Xiong, Xinyi Rang, Hermann Lühr, Fan Yin   +3 more
wiley   +1 more source

Empirical modeling of the quiet time nightside magnetosphere [PDF]

, 1994
Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated. Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko (1989)
Lui, A. T. Y., Spence, Harlan E., Stern, D. P.   +2 more
core   +2 more sources

A Novel Technique for Extracting the Tidal Magnetic Field: Methodology and Application to a Pre‐Processed Dataset of CSES and Swarm

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The oceanic tidal magnetic field, mainly driven by the circular orbital motion of the Moon, is an essential part of the time‐varying geomagnetic field. The previously adopted time‐harmonic (TH) base worked well in fitting the primary M2 ${M}_{2}$ tidal field, but extracting the other weaker modes like the N2 ${N}_{2}$ was difficult with only a
Haoren Ma, Yanyan Yang, Zhaojin Rong, Dongquan Wang, Jiawei Gao, Zeren Zhima, Jie Wang, Bin Zhou, Werner Magnes, Fei He, Y. Wei   +10 more
wiley   +1 more source

Observations of High‐Resolution Two‐Dimensional Ionospheric Flow Dynamics Associated With Poleward Boundary Intensifications

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Poleward boundary intensifications (PBIs) are one of the most common auroral disturbances and have been shown to play a key role in substorm dynamics. PBIs are commonly interpreted as the ionospheric signature of magnetotail reconnection, providing insight into X‐line evolution.
Katherine Davidson, Yukitoshi Nishimura, Larry Lyons, Eric Donovan, Vassilis Angelopoulos, Nozomu Nishitani   +5 more
wiley   +1 more source

Cold ions of ionospheric origin observed at the dayside magnetopause and their effects on magnetic reconnection [PDF]

, 2015
Thesis (Ph.D.) University of Alaska Fairbanks, 2015Magnetic reconnection at the dayside magnetopause is one of the most important mechanisms that efficiently transfers solar wind particles, momentum, and energy into the magnetosphere.
Lee, Sun-Hee, 이, 선희
core  

Influence of the Eccentric Geomagnetic Dipole on Longitude Variations of Compressional Upstream Wave Amplitudes in the Topside Ionosphere: Results From the MSS‐1A Satellite

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Based on 2‐year magnetic data from the Macau science satellite, we investigate the compressional Pc3‐4 pulsations (between 16 and 100 mHz) driven by upstream waves (UWs). Our results confirm larger UWs amplitudes in the South Atlantic Anomaly (SAA) longitudes, agreeing with previous missions.
Chao Xiong, Haibin Liu, Hermann Lühr, Chunyu Xu   +3 more
wiley   +1 more source

Stellar wind-magnetosphere interaction at exoplanets: computations of auroral radio powers

, 2016
We present calculations of the auroral radio powers expected from exoplanets with magnetospheres driven by an Earth-like magnetospheric interaction with the solar wind.
Milan, S. E., Nichols, J. D.
core   +1 more source