Blowing Up Warped Disks

Details Blowing Up Warped Disks Blowing Up Warped Disks

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.2204i&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #22.04; Bulletin of the American Astronomical Society, Vol. 34, p.1141

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Scientific paper

Planetary nebulae are rarely spherical. More often they show a pronounced bipolar shape. Balick proposed that such forms arise due to an interaction between a very fast tenuous outflow, the `last gasp' of the star, and a disk-shaped denser atmosphere left over from an earlier slow phase of mass loss. Analytical and numerical work shows that this mechanism works very well. However, many circumstellar nebulae have a `multipolar' or `point-symmetric' shape. I demonstrate that these seemingly enigmatic forms can be easily reproduced by a two-wind model in which the confining disk is warped, as is expected to occur in irradiated disks. Large-scale explosions in other non-planar disks, such as might occur in active galaxies, are expected to show similar patterns.

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