Results 31 to 40 of about 355,313 (165)

Magnetic fields in galaxies [PDF]

Proceedings of the International Astronomical Union, 2005
AbstractThe origin and evolution of magnetic fields in the Universe is a cosmological problem. Although exotic mechanisms for magneotgenesis cannot be ruled out, galactic magnetic fields could have been seeded by magnetic fields from stars and accretion disks, and must be continuously regenerated due to the ongoing replacement of the interstellar ...
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Primordial magnetic fields

We discuss here the following questions related to magnetic fields in the early universe: 1. Observational constraints on primordial magnetic fields. 2.
Shaposhnikov, M.
core   +1 more source

Adaptive Gaussian Markov Random Fields with Applications in Human Brain Mapping [PDF]

, 2005
Functional magnetic resonance imaging (fMRI) has become the standard technology in human brain mapping. Analyses of the massive spatio-temporal fMRI data sets often focus on parametric or nonparametric modeling of the temporal component, while spatial ...
Brezger, Andreas, Fahrmeir, Ludwig, Hennerfeind, Andrea   +2 more
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The investigation of quasi-separatrix layers in solar magnetic fields

, 2011
The structure of the magnetic field is often an important factor in many energetic processes in the solar corona. To determine the topology of the magnetic field features such as null points, separatrix surfaces, and separators must be found.
Restante, Anna Lisa
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The Magnetic Fields of Pulsars [PDF]

Symposium - International Astronomical Union, 1974
Two generation mechanisms of magnetic fields in pulsars are considered.If the temperature of a star is more than 108K, the star consists of a normal fluid of neutrons, protons and electrons. Because the angular velocity of pulsars is not constant dω/dt ≠0, inertia effects can occur, and generate magnetic fields through the relative motion of charged ...
openaire   +1 more source

Origin and Evolution of Large-scale Magnetic Fields

, 2015
Magnetic elds are ubiquitous at all scales in the Universe and have been observed in galaxies and clusters of galaxies via observations of di use radio emission and Faraday Rotation Measures.
Barnes, DJ
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Diamond as a magnetic field calibration probe [PDF]

, 2004
An optical method is proposed for the calibration of pulsed magnetic fields using photoluminescence from synthetic diamond. Generally, the pulsed magnetic field profile is reconstructed by measuring the pick-up voltage in a small coil with an effective ...
Stesmans, A, Iakoubovskii, K, Hayne, M, Moshchalkov, V V, Maes, J   +4 more
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Topological structure of the magnetic solar corona

, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
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Modelagem e medições de campos elétricos e magnéticos em linhas de transmissão [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2011Este trabalho apresenta como proposta principal a modelagem e a medição de campos elétricos e ...
Guedes, Tiago da Silva
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Magnetic Fields with the Atacama Large Millimeter/Submillimeter Array

, 2014
The Atacama Large Millimeter/submillimeter Array (ALMA) is one of the largest radio telescopes and is located at 5, 000 m altitude in the Atacama desert in Chile. Its unprecedented sensitivity at extremely high angular and spectral resolution in the (sub-
Wouter Vlemmings, Vlemmings, Wouter, Vlemmings, Wouter,   +2 more
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