Results 51 to 60 of about 1,013,936 (266)

Lower hybrid cavities in the inner magnetosphere [PDF]

open access: yesGeophysical Research Letters, 2003
We present observations of lower hybrid cavities from altitudes above 10,000 km, using data from Viking and Cluster satellites. Lower hybrid cavities (LHCs) are narrow (ion gyroradius scale) density depletions with enhanced amplitude of waves in the lower hybrid frequency range, previously reported below 1750 km altitude by the Freja satellite and ...
A. Tjulin, A. I. Eriksson, M. André
openaire   +1 more source

Drivers and Properties of Waves in the Inner Magnetosphere [PDF]

open access: yes, 2021
AbstractHow different wave modes are driven, is a central issue in space plasma physics. A practical problem is that often only indirect evidence of the driver can be identified in observations. The plasma environment is complex and variable and already a small difference in background or initial conditions may lead to widely different observable ...
Hannu E. J. Koskinen   +1 more
openaire   +1 more source

Modeling of the Jovian Magnetosphere [PDF]

open access: yesAnnales Geophysicae, 2005
This paper presents a global model of the Jovian magnetosphere which is valid not only in the equatorial plane and near the planet, as most of the existing models are, but also at high latitudes and in the outer regions of the magnetosphere. The model
I. I. Alexeev, E. S. Belenkaya
doaj   +1 more source

Accretion, Outflows, and Winds of Magnetized Stars

open access: yes, 2016
Many types of stars have strong magnetic fields that can dynamically influence the flow of circumstellar matter. In stars with accretion disks, the stellar magnetic field can truncate the inner disk and determine the paths that matter can take to flow ...
A. Brandenburg   +192 more
core   +1 more source

Intensification of the Electron Zebra Stripes in the Earth's Inner Magnetosphere During Geomagnetic Storms

open access: yesGeophysical Research Letters
We examined rapid variations in the electron zebra stripe patterns, specifically at L = 1.5, over a three‐month duration, using twin Van Allen Probes within Earth's inner magnetosphere. During geomagnetically quiet intervals, these stripes exhibit a peak‐
Megha Pandya   +4 more
doaj   +1 more source

Excitation of Alfvén waves by modulated HF heating of the ionosphere, with application to FAST observations [PDF]

open access: yesAnnales Geophysicae, 2002
During the operation of the EISCAT high power facility (heater) at Tromsø, Norway, on 8 October 1998, the FAST spacecraft made electric field and particle observations in the inner magnetosphere at 0.39 Earth radii above the heated ionospheric ...
E. Kolesnikova   +5 more
doaj   +1 more source

Recirculation of plasmasphere material during idealized magnetic storms

open access: yesFrontiers in Physics, 2023
The fate of flux tube material once it is eroded from of the plasmasphere through a dayside plume remains unknown. The eroded plasmasphere material can be either swept away by the solar wind and lost from Earth’s system, or recirculated into the inner ...
Christian-Andrew Bagby-Wright   +4 more
doaj   +1 more source

Observational features of charge distribution in Earth’s inner magnetosphere

open access: yesCommunications Physics
Understanding the motion of charged particles in the electromagnetic field in the inner magnetosphere is essential for space science and space weather. Charge accumulation can occur due to the dipole magnetic and convective electric fields in this region.
Lai Gao   +11 more
doaj   +1 more source

Electric Current Approach Studying Both Auroral Substorms and Solar Flares Together

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Auroral substorms and solar flares are basically various manifestations of electromagnetic energy dissipation processes, so it is useful to consider both phenomena in terms of a chain of processes, consisting of power supply (dynamo), transmission ...
Syun-Ichi Akasofu
doaj   +1 more source

Discovery of a transient radiation belt at Saturn [PDF]

open access: yes, 2008
Radiation belts have been detected in situ at five planets. Only at Earth however has any variability in their intensity been heretofore observed, in indirect response to solar eruptions and high altitude nuclear explosions. The Cassini spacecraft's MIMI/
Armstrong, TP   +9 more
core   +1 more source

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