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A Lower Angular Momentum Limit for Self-Gravitating Protostellar Disc Fragmentation
Duncan Forgan, Ken Rice
We attempt to verify recent claims (made using semi-analytic models) that for the collapse of spherical homogeneous molecular clouds, fragmentation of the self-gravitating disc tha…
The Jeans Mass as a Fundamental Measure of Self-Gravitating Disc Fragmentation and Initial Fragment Mass
Duncan Forgan, Ken Rice
As a formation route for objects such as giant planets and low-mass stars in protostellar discs (as well as stars in AGN discs), theories of self-gravitating disc fragmentation nee…
Spatio-temporal Constraints on the Zoo Hypothesis, and the Breakdown of Total Hegemony
Duncan H Forgan
The Zoo Hypothesis posits that we have not detected extraterrestrial intelligences (ETIs) because they deliberately prevent us from detecting them. While a valid solution to Fermi'…
Extrasolar Asteroid Mining as Forensic Evidence for Extraterrestrial Intelligence
Duncan Forgan, Martin Elvis
The development of civilisations like ours into spacefaring, multi-planet entities requires significant raw materials to construct vehicles and habitats. Interplanetary debris, inc…