Posted on 09/01/2004 2:36:56 PM PDT by longshadow
We can answer immediately if we use quantum entanglement.
RA should be the one responding to your question, but since he's probably off flogging some submissive wench in the "control room", I'll do my best in his absence.
AFAIK, SETI looks for a carrier wave. I don't know much about SS433 type objects, but my impression was that there is NO known natural process for producing a carrier wave.
Additionally, if an SS433 type object were there, it should be radiating all sorts of EM all over the spectrum, not just at 1420Mhz, right? The accretion disk ought to be putting out lots of energy, even in the X-ray region, I should think. But they apparently haven't found either an optical or "normal" radio source in this location.
If I had to guess, I'd go with it being either some sort of anomaly (s/w bug?), or some sort of terrestrial (or internal) signal that is leaking into the system when they "point" it at this location.
Now, if they can confirm this signal from a second radio telescope, that's a horse of a different color.....
Just AlGore pinging his lock box.
Now, now. You know that quantum entanglement can't be used to send an FTL signal. No fair deliberately sending a thread down the path of kookery...although I suppose that on this thread, it's unavoidable.
Nah, it says, "Friends, Romans, Countrymen lend me your ear"
You wrote:
"unless they're coming to seek revenge for us having broadcast My Mother The Car 35 years ago). "
Humor columnist Dave Barry also considered something like this in a column long ago--he suggested, though, that
Carl Sagan's plaque would label us as galactic/intergalactic perverts ('the man on the plaque is clearly deranged. He's waving his hand as if to say "HA!
I'm as naked as a jaybird."')
He suggests the aliens LIKE our TV re-runs. :-)
You wrote:
"that's a horse of a different color....."
Yeah, beat that dead horse </g>
Why search for intelligent life elsewhere in the
Universe when we can't find it _here_?
Like we need more Kerry Voters from Outer Space (TM) </g>
Is it too late for a 54 y.o. non-math-inclined guy to get into SETI?
A dark dwarf, not part of a binary system, with a hole in its side?
A carrier wave is just a narrowband EM emission that can be modulated. There are plenty of natural ways to make a narrowband EM emission, such as a hydrogen spectral line, as is the case here. As for whether there is any (intelligent) modulation, they probably haven't checked, yet.
Additionally, if an SS433 type object were there, it should be radiating all sorts of EM all over the spectrum, not just at 1420Mhz, right?
The thing about SS433 is that it puts out a discrete hydrogen spectrum from relativistic atomic hydrogen. What makes SS433 such a "special star" (that's what the SS stands for) is that the hydrogen is relativistic. Just about any process you can imagine to make hydrogen relativistic will ionize the hydrogen, and ionized hydrogen puts out a continuous broadband spectrum, rather than a series of narrow spectral lines.
In this case, the hydrogen is atomic, but while it doesn't seems to be significantly doppler-shifted (since the 1420 line seems to be in the right place), it does have some periodicity. If we were looking at an SS433-type object from an equatorial direction, we may not see much doppler shifting, but there may be a periodic frequency wandering due to the precession of the object. The precession period for SS433 is 163 days, rather longer than the period for this object, it seems.
The Pak fleet, headed here?
Not enough Berilium in the spectrum. That would lead to a larger shift than 30 hz
Relax. The message wasn't addressed to you. I wish you guys would stop trying to read my mail.
Go to SETI at Home ^ and join the group "Freepers".
You don't understand. SETI is Vade's only hope of meeting girls.
Out of curiousity: what velocities would cause 8 and 37 hertz shifts in a 1420 Mhz carrier?
Doing the math, I come up with 1.690 and 7.816 m/s, respectively (3.781 and 17.486 MPH).
IMO: It looks like the aliens are stuck behind a school bus...
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