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- W2783304874 abstract "Spiral patterns in some disc galaxies have two arms in the centre, and three or more arms on the periphery. The same result is also obtained in numerical simulations of stellar and gaseous discs. We argue that such patterns may occur due to fast cooling of the gas, resulting in formation of giant molecular clouds. The timescale of this process is 50 Myr, the factor of 10 shorter than of ordinary secular instability. The giant molecular clouds give rise to multiarm spirals through the mechanism of swing amplification." @default.
- W2783304874 created "2018-01-26" @default.
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- W2783304874 date "2018-01-09" @default.
- W2783304874 modified "2023-09-27" @default.
- W2783304874 title "Multiarm spirals on the periphery of disc galaxies" @default.
- W2783304874 hasPublicationYear "2018" @default.
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