[time-nuts] Pulsar Source?
Hal Murray
hmurray at megapathdsl.net
Fri Mar 30 08:20:40 UTC 2012
actast at hotmail.com said:
> Forth: The problems I foresee are can an practical algorithm accounting for
> the complex motion of all these bodies be built ...
Radio astronomers are pretty good at that sort of calculation. Google for
VLBI.
The key step for VLBI is modeling the exact location of each antenna over
time. They even include tides in solid rock. (about a foot)
I think there is a chicken-egg step in there. You can use a bright object
and the known location of several antennas to figure out the location of a
new antenna. I assume they iterate.
So, if you can figure out the orbital parameters for your receivers, they can
do the math.
Note the comment from:
Little Green Men, White Dwarfs or Pulsars?
By S. Jocelyn Bell Burnell
http://www.bigear.org/vol1no1/burnell.htm
(It's a good read.)
> So were these pulsations man-made, but made by man from another
> civilization? If this were the case then the pulses should show Doppler
> shifts as the little green men on their planet orbited their sun. Tony
> Hewish started accurate measurements of the pulse period to investigate
> this; all they showed was that the earth was in orbital motion about the
> sun.
That was back in 1967.
--
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