The existence and importance of magnetic fields in planetary nebulae

Details The existence and importance of magnetic fields in planetary nebulae The existence and importance of magnetic fields in planetary nebulae

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...147..257p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 147, no. 2, June 1985, p. 257-264. In French.

Astronomy and Astrophysics

Astrophysics

19

Interplanetary Magnetic Fields, Magnetic Effects, Planetary Nebulae, Anisotropy, Magnetic Dipoles, Magnetic Field Configurations, Magnetohydrodynamics

Scientific paper

The effect of an axisymmetric dipole magnetic field on the morphology of the planetary nebula formed from a red giant by mass-loss at 0.00005 solar mass/yr with isothermal gas transport is investigated theoretically. Numerical results are presented in tables and compared with those of other anisotropic models and with observational evidence, and the possibility of filamentary microstructures or galactic-magnetic-field effects is considered. It is shown that many planetary-nebula structures can be explained by internal fields of 100-1000 microG (such that the magnetic energy is greater than or about equal to the other energy components), with the effects of a 20-microG galactic field restricted to the outer surface of the nebula.

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