Results 51 to 60 of about 24,725 (253)

Low‐dose X‐ray radiation induces an adaptive response: A potential countermeasure to galactic cosmic radiation exposure

open access: yesExperimental Physiology, EarlyView.
Abstract Space exploration involves many dangers including galactic cosmic radiation (GCR). This class of radiation includes high‐energy protons and heavy ionizing ions. NASA has defined GCR as a carcinogenic risk for long‐duration space missions. To date, no clear strategy has been developed to counter chronic GCR exposure.
Siena Edwards   +3 more
wiley   +1 more source

Solar Wind–Magnetosphere Coupling by the Kelvin–Helmholtz Instability at Mercury

open access: yesThe Astrophysical Journal
The Kelvin–Helmholtz instability (KHI) has been considered important in the energy transfer and momentum coupling between the solar wind and planetary magnetospheres.
S. H. Lai   +3 more
doaj   +1 more source

Directional sensitivity of MuSTAnG muon telescope

open access: yesJournal of Space Weather and Space Climate, 2013
We investigate directional sensitivity of MuSTAnG muon telescope by deriving the distribution of secondary muons, which create the counting rate of telescope, by asymptotic directions of primary protons.
Ganeva Marina   +2 more
doaj   +1 more source

Explicit IMF By Dependence in Geomagnetic Activity: Modulation of Precipitating Electrons

open access: yesGeophysical Research Letters, 2020
The most important driver of geomagnetic activity is the north–south ( Bz) component of the interplanetary magnetic field (IMF), which dominates the solar wind‐magnetosphere coupling and all solar wind coupling functions.
L. Holappa, T. Asikainen, K. Mursula
doaj   +1 more source

Validation of the use of THEMIS-B and THEMIS-C as a near-Earth solar wind monitor

open access: yesEarth and Planetary Physics, 2022
Two THEMIS (Time History of Events and Macroscale Interactions during Substorms) spacecraft, B and C, began orbiting the Moon in 2011 and have since provided routine measurements of the plasma conditions in the lunar orbit.
DianJun Zhang, WenLong Liu, Zhao Zhang
doaj   +1 more source

The Structure of Martian Magnetosphere at the Dayside Terminator Region as Observed on MAVEN Spacecraft [PDF]

open access: yes, 2018
We analyzed 44 passes of the MAVEN spacecraft through the magnetosphere, arranged by the angle between electric field vector and the projection of spacecraft position radius vector in the YZ plane in MSE coordinate system (${\theta}$ E ). All passes were divided into 3 angular sectors near 0{\deg}, 90{\deg} and 180{\deg} ${\theta}$ E angles in order to
arxiv   +1 more source

Ray-tracing simulations of whistler-mode wave propagation in different rescaled dipole magnetic fields

open access: yesEarth and Planetary Physics, 2022
Kinetic simulation is a powerful tool to study the excitation and propagation of whistler-mode waves in the Earth’s inner magnetosphere. This method typically applies a scaled-down dipole magnetic field to save computational time.
YangGuang Ke   +4 more
doaj   +1 more source

Obliquely rotating pulsars: screening of the inductive electric field [PDF]

open access: yes, 2011
Pulsar electrodynamics has been built up by taking ingredients from two models, the vacuum-dipole model, which ignores the magnetosphere but includes the inductive electric field due to the obliquely rotating magnetic dipole, and the corotating-magnetosphere model, which neglects the vacuum inductive electric field and assumes a corotating ...
arxiv   +1 more source

From physics of polar aurora to changes of the fundamental approaches to the physics of the magnetospheric processes

open access: yesFrontiers in Astronomy and Space Sciences, 2022
One of the main problems of modern magnetospheric physics is the lack of a self-consistent explanation of the main physical processes based on the laws of plasma physics.
Elizaveta E. Antonova   +1 more
doaj   +1 more source

A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley   +1 more source

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