Results 91 to 100 of about 372,553 (214)

Solar magnetic fields

Journal of Astrophysics and Astronomy, 1994
ISSN:0973 ...
openaire   +2 more sources

Solid state MPD thruster with applied magnetic field [PDF]

, 2007
A solid state MPD thruster with applied magnetic field has been investigated. The MPDhas been operated with applied fields up to 0.4 T. Current, impulse bit and ablated masshave been measured.
Coletti, M., Paccani, G., Balsetra, A., Sensini, M.   +3 more
core  

A bound for relative magnetic helicity in terms of free magnetic energy

Discover Space
The topological complexity of magnetic fields in astrophysics can be described with the aid of magnetic helicity. Amongst its many properties, magnetic helicity provides a bound on the magnetic energy.
David MacTaggart
doaj   +1 more source

The effect of static electric fields on Drosophila behaviour [PDF]

, 2012
Electric fields are present in the environment and generated from natural sources, such as a thunderstorm or artificially from electrical devices and transmission lines.
Al Ghamdi, Mesfer S., Al Ghamdi, Mesfer S   +1 more
core  

Magnetic Field Monitoring of Four Massive A–F Supergiants

The Astrophysical Journal Letters
We report magnetic field measurements spanning about 15 yr of four massive (7.5–15 M _⊙ ) supergiant stars: α Per (HD 20902, F5Iab), α Lep (HD 36673A, F0Ib), η Leo (HD 87737, A0Ib) and 13 Mon (HD 46300, A1Ib).
Gregg A. Wade, Mary Oksala, Coralie Neiner, Étienne Boucher, James A. Barron   +4 more
doaj   +1 more source

A synergistic spectropolarimetric inversion via gradient-bias annealing and physics-informed neural networks

Astronomy & Astrophysics
Context. Spectropolarimetric inversions are usually employed to obtain the physical parameters (e.g., magnetic field, velocity, temperature) of the solar atmosphere that contribute to the observed Stokes spectra.
Chen G. Y., Guo Y., Díaz Baso C. J., Hao Q., Ding M. D.   +4 more
doaj   +1 more source

Magnetic fields and cancer.

Environmental Health Perspectives, 1993
This letter is a response to an article by Savitz and Kaune, EHP 101:76-80. W-L wire code was applied to data from a 1988 Denver study, and an association was reported between high W-L wire code and childhood cancer. This author discusses several studies and provides explanations which weakens the argument that classification error resulted in an ...
openaire   +1 more source

Analysis of Enceladus’s Time-variable Space Environment to Magnetically Sound its Interior

The Planetary Science Journal
We provide a comprehensive study of Enceladus’s time-variable magnetic field environment and identify in measurements of the Cassini spacecraft signatures that appear to be consistent with induced fields from the moon’s interior.
Joachim Saur, Stefan Duling, Alexander Grayver, Jamey R. Szalay   +3 more
doaj   +1 more source

Stationary flux ropes at the southern terminator of Mars [PDF]

, 2012
Flux ropes have long been observed in the upper atmosphere of Venus, and more recently at Mars. Here we present magnetic field measurements of flux ropes encountered at the southern terminator of Mars by Mars Global Surveyor, and compare them to a flux ...
Beharrell, Mat, Wild, James
core  

Can the Dynamo of Spiral-arm Galaxies Be Explained by Anisotropic Conductivity?

The Astrophysical Journal
The possibility of generating a magnetic field by a dynamo effect with anisotropic electrical conductivity rather than turbulent flow has been demonstrated theoretically and experimentally.
Paul Gomez, Franck Plunian, Thierry Alboussière   +2 more
doaj   +1 more source