[time-nuts] Time of death-Again

[Javier Herrero]

El 30/10/2010 10:31, Hal Murray escribió:
>
>
> Suppose you have to go back a zillion years.  Now the fuzz on the period adds
> to the fuzz on measuring an individual pulse.
>
>
Not to forget that pulsar frequencies spins down as the energy that they 
emits is ultimately drawn from its rotational energy (PSR B1937+21 spins 
down at 1.05 x 10^-19 seconds per second). In a zillion years this could 
amount a bit of time (several hundred microseconds over the 2.29 x 10e8 
years life of this pulsar if the spin down rate would have been constant 
- too much drift for a real time-nut ;) )

Regards,

Javier

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