[time-nuts] Pulsar Source?

Azelio Boriani azelio.boriani at screen.it
Fri Jul 27 12:13:59 UTC 2012


The same issue we have for rotating clocks on board of GPSes and
differently rotating clocks on the Earth's surface?

On Fri, Mar 30, 2012 at 12:02 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> Pulsars are an "interesting clock". That by no means equates to them being
> a better clock than an ion standard or possibly a neutron standard. If you
> look at ADEV numbers, there's pretty much no way a pulsar will be anywhere
> near the level a good atomic clock can deliver over useful time spans.
>
> For long time spans you get into a "what indeed is time?" issue. Atomic
> clocks have been more stable than the earth's rotation for quite a while.
> We correct things to allow for the earth as a result. If you are going to
> do that for atomic clocks - the same issues get into a pulsar source "as
> delivered" on earth's surface. Weather you pick it up in space and relay it
> or not, you still have the math issues of getting it to the surface.
>
> Bob
>
> On Mar 28, 2012, at 2:29 PM, Tom Knox wrote:
>
> >
> > If pulsars are natures best clocks, I wonder how practical it would be
> to use satellites to receive and rebroadcast a highly accurate timing
> signal based on their signals?
> >
> > Thomas Knox
> >
> >
> >
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