Periodicals>Journal Article:  Sagan , Carl and Walker, Russell G. (August 27, 1965), The Infrared Detectability of Dyson Civilizations, American Astronomical Society, Retrieved on 2014-03-16
  • Source Material []
  • Folksonomies: astronomy seti


    16 MAR 2014

     Seeing Dyson Civilizations

    In summary, the circumstellar shells of Dyson civilizations-at temperatures ~300 degrees K and radii ~1 a.u.--can be detected with existing telescopes and state-of-the-art infrared detectors in the 8-13-u window out to distances of several hundred parsecs. But discrimination of Dyson civilizations from naturally occurring low-temperature objects is very difficult, unless Dyson civilizations have some further distinguishing feature, such as monochromatic radio-frequency emission.
     1  1  notes

    How difficult would it be to detect their heat signature?