Atlantis Online
January 22, 2021, 10:24:27 am
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Scientists to drill beneath oceans
http://atlantisonline.smfforfree2.com/index.php/topic,8063.0.html
 
  Home Help Arcade Gallery Links Staff List Calendar Login Register  

Detectability of Extraterrestrial Technological Activities


Pages: 1 [2] 3   Go Down
  Print  
Author Topic: Detectability of Extraterrestrial Technological Activities  (Read 698 times)
Jennifer Murdoch
Superhero Member
******
Posts: 5235



« Reply #15 on: February 04, 2010, 01:21:57 pm »

       kind of signals  near  the  galactic  center.   Because  one  of the
       characteristics of artificial transmitters (television, radar, etc.)
       is the highly  polarized  signal   (Sullivan  et  al,  1978),  these
       researchers made seven observing runs of roughly three  days each in
       a program to  scan  for  strongly  polarized  radio  signals  at the
       wavelength of lambda=2.82 cm.

       Radar Warning Signals

       Assuming that there is a certain  number  N  of civilizations in the
       galaxy at or  beyond  our  own  level  of  technical  facility,  and
       considering that each  civilization is on or near a planet of a Main
       Sequence star where  the planetoid  and  comet  impact  hazards  are
       considered as serious   as   here,  Lemarchand  and   Sagan   (1993)
       considered the possibility  for detecting some of these "intelligent
       activities" developed to  warn  of   these   potentially   dangerous
       impacts.

Report Spam   Logged
Pages: 1 [2] 3   Go Up
  Print  
 
Jump to:  

Powered by EzPortal
Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum
Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy