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Article overview
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Dynamical and biological panspermia constraints within multi-planet exosystems | Dimitri Veras
; David J. Armstrong
; James A. Blake
; Jose F. Gutierrez-Marcos
; Alan P. Jackson
; Hendrik Schaefer
; | Date: |
Mon, 12 Feb 2018 19:00:03 GMT (1850kb) | Abstract: | As discoveries of multiple planets in the habitable zone of their parent star
mount, developing analytical techniques to quantify extrasolar intra-system
panspermia will become increasingly important. Here, we provide user-friendly
prescriptions that describe the asteroid impact characteristics which would be
necessary to transport life both inwards and outwards within these systems
within a single framework. Our focus is on projectile generation and delivery
and our expressions are algebraic, eliminating the need for the solution of
differential equations. We derive a probability distribution function for
life-bearing debris to reach a planetary orbit, and describe the survival of
micro-organisms during planetary ejection, their journey through interplanetary
space, and atmospheric entry. | Source: | arXiv, 1802.4279 | Services: | Forum | Review | PDF | Favorites |
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