[time-nuts] Pulsars make a GPS for the cosmos
mc235960
mc235960 at gmail.com
Mon Sep 30 04:46:37 EDT 2013
Le 30 sept. 2013 à 09:19, Hal Murray a écrit :
>
> jimlux at earthlink.net said:
>> You also get direction, so for a "navigation" system, you can figure out
>> where you are.
>
> I'm still missing the big picture.
>
> If I'm working off direction, why are pulsars interesting? Why radio vs
> optical? There are lots of bright stars out there. Why not use them for
> navigation?
>
I think it is a question of improving accuracy. Comparing a group of pulsars "tick" arrival times being better than comparing apparent star positions, which depends on camera resolution ,and also , if position relative to earth is required, against a base catalog. Pulsars make that easier.
>
> --
> These are my opinions. I hate spam.
>
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>
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