Results 31 to 40 of about 639,860 (349)

Satellite Geomagnetism [PDF]

open access: yes, 2012
Observations of Earth's magnetic field from space began more than 50 years ago. A continuous monitoring of the field using low Earth orbit (LEO) satellites, however, started only in 1999, and three satellites have taken high-precision measurements of ...
Olsen, Nils, Stolle, Claudia
core   +1 more source

Space-based weather observatory at Earth-Moon Lagrange point L1 to monitor earth's magnetotail effects on the Moon [PDF]

open access: yes, 2021
Lunar hematite is formed by the oxidation of iron on the surface of the Moon by oxygen from the Earth's upper atmosphere. The Moon's surface is continuously affected by solar particles from the sun. However, Earth's magnetic tail blocks 99 % of the solar wind and provides windows of opportunity to transport oxygen from Earth's upper atmosphere to the ...
arxiv   +1 more source

Solar wind induced magnetic field around the unmagnetized Earth [PDF]

open access: yesAstron.Astrophys. 420 (2004) L15-L18, 2004
The Earth is a planet with a dipolar magnetic field which is agitated by a magnetized plasma wind streaming from the Sun. The magnetic field shields the Earth's surface from penetrating high energy solar wind particles, as well as interstellar cosmic rays.
arxiv   +1 more source

Detecting solar axions using Earth's magnetic field

open access: yes, 2005
We show that solar axion conversion to photons in the Earth's magnetosphere can produce an x-ray flux, with average energy \sim 4 keV, which is measurable on the dark side of the Earth.
D. L. Anderson   +4 more
core   +1 more source

Magnetic clouds' structure in the magnetosheath as observed by Cluster and Geotail: four case studies [PDF]

open access: yesAnnales Geophysicae, 2014
Magnetic clouds (MCs) are large-scale magnetic flux ropes ejected from the Sun into the interplanetary space. They play a central role in solar–terrestrial relations as they can efficiently drive magnetic activity in the near-Earth environment.
L. Turc   +3 more
doaj   +1 more source

Extracting scaling laws from numerical dynamo models

open access: yes, 2013
Earth's magnetic field is generated by processes in the electrically conducting, liquid outer core, subsumed under the term `geodynamo'. In the last decades, great effort has been put into the numerical simulation of core dynamics following from the ...
Jackson, A., Stelzer, Z.
core   +1 more source

The role of rotation in the evolution of dynamo generated magnetic fields in Super Earths [PDF]

open access: yesIcarus, Volume 217, Issue 1, January 2012, Pages 88-102, 2011
Planetary magnetic fields could impact the evolution of planetary atmospheres and have a role in the determination of the required conditions for the emergence and evolution of life (planetary habitability). We study here the role of rotation in the evolution of dynamo-generated magnetic fields in massive earth-like planets, Super Earths (1-10 $M_ ...
arxiv   +1 more source

The Earth's main magnetic field

open access: yesPhysics Education, 1999
It is well known that the Earth has a dipolar magnetic field, as compasses show. But why does it point some distance away from true North, and what causes this difference to vary with time?
Whaler, K., Holme, R.
openaire   +5 more sources

On identifying magnetized anomalies using geomagnetic monitoring [PDF]

open access: yes, 2018
We propose and investigate the inverse problem of identifying magnetized anomalies beneath the Earth using the geomagnetic monitoring. Suppose a collection of magnetized anomalies presented in the shell of the Earth. The presence of the anomalies interrupts the magnetic field of the Earth, monitored above the Earth. Using the difference of the magnetic
arxiv   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

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