The formation of super-rings

Details The formation of super-rings The formation of super-rings

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88...61t&link_type=abstract

Astronomy and Astrophysics, vol. 88, no. 1-2, Aug. 1980, p. 61-65.

Astronomy and Astrophysics

Astrophysics

51

Cosmology, Disk Galaxies, Galactic Evolution, Gas Expansion, Hydrogen Clouds, High Temperature Gases, Milky Way Galaxy, Rarefied Gases, Ring Structures

Scientific paper

The collision of a small neutral cloud (surface density of 10 to the 19th/sq cm) with a constant density galactic disk was calculated. Through the collision, a large amount of energy is deposited in a small volume of the galaxy, resulting in a supersonic expansion of very hot (one million to ten million K) gas into the galaxy and out of the galactic disk. The expansion generates a large cavity (a super-ring) with physical characteristics (diameter, velocity of expansion, etc.) in agreement with the observations, and a large volume of hot low-density gas with properties similar to those of the observed coronal gas.

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