On the origin of the Mushroom cloud

Details On the origin of the Mushroom cloud On the origin of the Mushroom cloud

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.7205m&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #72.05; Bulletin of the American Astronomical Society, Vol. 31, p.948

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

Different scenarios of the HI cloud GW 123.4-1.5 (also called the Mushroom) formation are discussed. This Galactic worm candidate has been imaged with high (1 arcmin) resolution as part of the Canadian Galactic Plane Survey using the Dominion Radio Astrophysical Observatory's (DRAO) Synthesis Telescope. The cloud appears to be bursting out of the main bulk of HI gas, with the base displaced about a degree from the mid-plane of Milky Way, and has a vertical size of about 340 pc (for the assumed distance 3.6 kpc). To simulate the evolution of the cloud both thin-shell and finite difference (ZEUS 2-D) hydrodynamic codes have been used. Considered sources of energy were stellar winds and supernova explosions. Our preliminary modeling indicates that the observational data are consistent with a single off-plane SN explosion hypothesis.

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