Any signal from a stellar system will be a "penlight" compared to the central star itself.

Space/Science » in reply to I think I'm starting to get it

David F Mayer — 8/15/2004 3:39:31 AM (archived)

Only an extremely narrow beam could be seen against the noise produced by the central star of the system. Huge antenna gain (narrowness of beam) is required to offset the huge power advantage of the central star relative to the signalling device.

The whole thread (18 posts)

Window for detecting intelligent life on Earth is closing - Tom Brosz - 8/11/2004 1:32:23 AM
- We may be looking at the wrong place, that is, outward rather than inward... - Marvi - 8/13/2004 11:47:07 PM
- re: Maybe we aren't hearing anyone because we live in a dangerous neighborhood. - Scott Evil - 8/13/2004 7:45:21 PM
- Impossible to detect such a small signal anyway. - David F Mayer - 8/12/2004 5:27:46 AM
  - Single photon detectors are common lab equipment - ZG - 8/12/2004 7:44:48 AM
    - You don't get it. - David F Mayer - 8/12/2004 5:47:50 PM
      - In other words... - Tom Brosz - 8/13/2004 2:35:09 AM
        
        I think I'm starting to get it - ZB - 8/13/2004 5:14:48 AM
        
        Any signal from a stellar system will be a "penlight" compared to the central star itself. - David F Mayer - 8/15/2004 3:39:31 AM
        
        Not so, if targeting - phil - 8/16/2004 1:55:03 AM
        
        That is BEAMING. I said that a spherical wave front can not be detected. - David F Mayer - 8/17/2004 12:31:36 AM
        
        Better not blink. - Tom Brosz - 8/16/2004 3:26:35 PM
- very misleading - phil - 8/11/2004 3:13:53 PM
  - I think I will start a new thread on here about this, see above - R.L. - 8/15/2004 6:15:42 AM
  - re: very misleading - Tom Brosz - 8/11/2004 4:53:26 PM
    - I agree - p - 8/12/2004 1:20:15 AM
      - What do you call a guy with no arm and legs who sits in a hole? (n/t) - ZC - 8/12/2004 7:37:27 AM
        
        HOW BOUT 'Muddy Stubby'? (n/t) - R.L. - 8/15/2004 7:20:25 AM

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