Asteroid search leakage radiation and SETI

Carl T. Helmers Jr.

doi:10.1117/12.243442

24 June 1996 Asteroid search leakage radiation and SETI

Carl T. Helmers Jr.

Proceedings Volume 2704, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum II; (1996) https://doi.org/10.1117/12.243442
Event: Photonics West '96, 1996, San Jose, CA, United States

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.

Citation Download Citation

Carl T. Helmers Jr. "Asteroid search leakage radiation and SETI", Proc. SPIE 2704, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum II, (24 June 1996); https://doi.org/10.1117/12.243442

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