Magnetic Fields and Spiral Structure
نویسندگان
چکیده
منابع مشابه
Evolution of Magnetic Fields in Galaxies with Spiral Structure
3 S u m m a r y : We present simulations of the 3D nonlinear induction equation in order to investigate the temporal evolution of large-scale magnetic elds in spiral galaxies. Our model includes diierential rotation, ambipolar diiusion and, based on small-scale turbulence, eddy diiusivity and the tensorial-eeect with magnetic feedback. The nonax-isymmetric spiral pattern and { if considered { t...
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The first hints that our galaxy, the Milky Way, might host a large-scale magnetic field came in the late 1940s, from studies of the polarization of starlight. However, optical polarization is a relatively blunt tool and it was only in the late 1950s that radio synchroton observations began to indicate the presence of large-scale fields (e.g. Gardner and Davies 1966). By the early 1980s observat...
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We investigate the dynamics of magnetic fields in spiral galaxies by performing 3D Magnetohydrodynamics (MHD) simulations of galactic discs subject to a spiral potential using cold gas, warm gas and a two phase mixture of both. Recent hydrodynamic simulations have demonstrated the formation of inter-arm spurs as well as spiral arm molecular clouds provided the ISM model includes a cold HI phase...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1983
ISSN: 0074-1809
DOI: 10.1017/s0074180900032745