Gravitational Lens of the Sun: Its Potential for Observations and Communications over Interstellar Distances

  title={Gravitational Lens of the Sun: Its Potential for Observations and Communications over Interstellar Distances},
  author={Von R. Eshleman},
  pages={1133 - 1135}
  • V. Eshleman
  • Published 14 September 1979
  • Physics, Medicine
  • Science
The gravitational field of the sun acts as a spherical lens to magnify the intensity of radiation from a distant source along a semi-infinite focal line. A spacecraft anywhere on that line in principle could observe, eavesdrop, and communicate over interstellar distances, using equipment comparable in size and power with what is now used for interplanetary distances. If one neglects coronal effects, the maximum magnification factor for coherent radiation is inversely proportional to the… 
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The gravitational lens as an intergalactic communication tool
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Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI
  • Stephen Kerby, Jason T. Wright
  • Physics
    The Astronomical Journal
  • 2021
Several recent works have proposed a “stellar relay” transmission system in which a spacecraft at the focus of a star’s gravitational lens achieves dramatic boosts in the gain of an outgoing or
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Interstellar communication. II. Application to the solar gravitational lens
Abstract We have shown in paper I of this series [1] that interstellar communication to nearby (pc) stars is possible at data rates of bits per second per Watt between a 1 m sized probe and a large
Laser Communication with Proxima and Alpha Centauri using the Solar Gravitational Lens
A search was conducted for laser signals, both sub-second pulses and continuous emission, from the regions of the sky opposite Proxima and Alpha Centauri. These regions are located at the foci of the
The 550‐au Mission: a critical discussion
We have studied the science rationale, goals and requirements for a mission aimed at using the gravitational lensing from the Sun as a way of achieving high angular resolution and high signal


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Abstract Radio occultation studies of the structure of planetary atmospheres have generally involved relatively shallow penetration of the spacecraft behind the limb of the planet in the plane of the
Extraterrestrial Intelligence: An Observational Approach
The microwave region of the electromagnetic spectrum, a plausible regime for signals from extraterrestrial intelligences, is largely unexplored, and an all-sky, broad-band survey lasting perhaps 5 years can be structured so that even negative results would establish significant boundaries on the regime in which such signals may be found.
Eavesdropping: the radio signature of the Earth.
The case of planet earth is considered to understand better the information which might be derivable from radio leakage, and a model including over 2000 television transmitters is used to demonstrate the wealth of astronomical and cultural information available from a distant observer's careful monitoring of frequency and intensity variations in individual video carriers.
Some time ago, R. W. Mandi paid me a visit and asked me to publish the results of a little calculation, which I had made at his request. This note complies with his wish.
The walls of growing plant cells.
A design study of a system for detecting extraterrestrial intelligent life," NASA Contract Rep
  • CR114445 (1973); W. T. Sullivan III, S. Brown, C. Wetherill, Science 199, 377 (1978); B. Murray, S. Gulkis, R. E. Edelson, ibid., p. 485; R. N. Bracewell, The Galactic Club
  • 1974
The messenger probe concept introduced by Bracewell would require
  • The Galactic Club
  • 1974