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Proceedings Paper

Asteroid search leakage radiation and SETI
Author(s): Carl T. Helmers
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Paper Abstract

Astrophysicists tell us that planetary systems are a byproduct of stellar evolution. This paper reviews the hazard human civilization faces from comet or asteroid collisions with the Earth, then makes the speculation that any ETI civilization evolving on any habitable planet would face the same sort of hazard from its star's residual protoplanetary debris. When the putative ETI civilization progresses to an active search strategy, radar and/or lidar signals used can result in a form of electromagnetic leakage radiation. Thus, the SETI programs of various radio and optical astronomers should evaluate the detection probabilities for signatures of the transient lidar or radar beams likely to result from an ETI civilization's active debris search technology.

Paper Details

Date Published: 24 June 1996
PDF: 6 pages
Proc. SPIE 2704, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum II, (24 June 1996); doi: 10.1117/12.243442
Show Author Affiliations
Carl T. Helmers, Helmers Publishing, Inc. (United States)


Published in SPIE Proceedings Vol. 2704:
The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum II
Stuart A. Kingsley; Guillermo A. Lemarchand, Editor(s)

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