Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...515..685n&link_type=abstract
The Astrophysical Journal, Volume 515, Issue 2, pp. 685-695.
Astronomy and Astrophysics
Astronomy
4
Ism: Magnetic Fields, Magnetohydrodynamics: Mhd, Sun: Solar Wind, Stars: Formation, Stars: Supernovae: General
Scientific paper
An intense localized magnetic field is suddenly introduced into a stationary, uniform, cold plasma and generates a region characterized by an intense field that excludes all particles (``magnetic bubble'') enveloped by a spherical shell of very dense plasma (``snowplow''). Outside the shell, the field disappears over a small distance scale and the plasma density tends to that of the undisturbed plasma. While a mathematically self-similar solution to the astrophysical problem associated with the early history of the magnetic bubble exists, the dynamical evolution maintains a subtle but significant difference from the self-similar solution. This MHD behavior can arise in the evolution of young stellar objects, during the switch-on of an OB star, in the solar wind, and during the formation of a magnetized neutron star or ``magnetar'' immediately following a supernova explosion.
Newman Alice L.
Newman William I.
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