archiv~1: Re: SETI Arecibo message to m13

Re: SETI Arecibo message to m13

Alfred A. Aburto Jr. ( (no email) )
Fri, 06 Nov 1998 06:07:47 -0800

> Noel Welstead wrote:
>
> Dear Alfred,
> The 3 minute transmission was to breif a time for it to be detected.
> If it was it would become someone elses WOW signal that never
> repeated. What a shame. We here on the Earth

Yes, I agree, the probability of detection of that signal (actually
a complex message --- not just a pure tone or chirp!) is extremely
low!

But, if by some far out highly improbable accident, it were detected
it would cause any intelligent entity to be curious because it is
a complex message (not a tone but a sequence of tones in a complex
pattern ... a message!). If the SETI League or SETI Institute
detected such a message it would be much more interesting and cause
much more excitement than the WOW signal ...

I say this simply because the message is complex in character
indicating intelligence behind it. One wouldn't even need to
decipher the message to realize that there was intelligence at work
in creating it ...

Al

>
> have sent signals that could arrise into folklore of Aliens that
> are also looking for aliens.??
> Regards,
> Noel C. Welstead.
>
> Alfred A. Aburto Jr. wrote:
>
> > Yes, 3 minutes was it. I checked in Frank Drake & Dava Sobel's
> > book: "Is Anyone Out There?", pagae 181 (available from the SETI
> > Institute gift shop).
> >
> > The probability of detecting that one signal is extremely low.
> >
> > If it were detected it would, all by it self, be interesting
> > because it would be a strange and complex signal (message really)
> > which would arouse the interest (hopefully) of any intelligent
> > reasoning entity.
> >
> > One reason I like the SETI Institute approach is that they are
> > searching individual stars within 200 LY of Earth looking for
> > deliberate or 'leakage' signals. That is exactly what they should
> > do with the high sensitivity intruments (Arecibo and other big
> > radio telescopes, also optical telescopes too (a new addition to
> > their search strategy)). Their problem is that they look for only
> > a few hours at a time --- periodically they will need to revisit
> > those stars to see if anything has changed ...
> >
> > Al Aburto
> >
> > > David Woolley wrote:
> > >
> > > > need to be looking at the right time (!), the right 3
> > > > minutes in a time span covering, say, several billion
> > >
> > > If it really only was a 3 minute transmission:
> > >
> > > - it would not be verified by current peer review processes if detected
> > > on earth;
> > >
> > > - in one sense, the communicating lifetime of the human civilisation might
> > > only be 3 minutes, which rather reduces the Drake equation score - of
> > > course this doesn't allow for leakage signals.