INVESTIGADORES
BERTUCCI Cesar
artículos
Título:
Steady-state Magnetohydrodynamic Flow around an Unmagnetized Conducting Sphere
Autor/es:
ROMANELLI, N.; GÓMEZ, D.; BERTUCCI, C.; DELVA, M.
Revista:
ASTROPHYSICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2014 vol. 789
ISSN:
0004-637X
Resumen:
The noncollisional interaction between conducting obstacles and
magnetized plasma winds can be found in different scenarios, from the
interaction occurring between regions inside galaxy clusters to the
interaction between the solar wind and Mars, Venus, and active comets,
or even the interaction between Titan and the Saturnian magnetospheric
flow. These objects generate, through several current systems,
perturbations in the streaming magnetic field leading to its draping
around the obstacle's effective conducting surface. Recent observational
results suggest that several properties associated with magnetic field
draping, such as the location of the polarity reversal layer of the
induced magnetotail, are affected by variations in the conditions of the
streaming magnetic field. To improve our understanding of these
phenomena, we perform a characterization of several magnetic field
draping signatures by analytically solving an ideal problem in which a
perfectly conducting magnetized plasma (with frozen-in magnetic field
conditions) flows around a spherical body for various orientations of
the streaming magnetic field. In particular, we compute the shift of the
inverse polarity reversal layer as the orientation of the background
magnetic field is changed.