Parkes observations for project P509 semester 2007APRS

We have been timing the very young pulsar PSR J1833-1034, recently
discovered near the center of the supernova remnant (SNR) G21.5-0.9
(Camilo et al. 2006). With 16 months of timing data in hand we have
confirmed that the pulsar is coincident, to sub-arcsec precision, with the
centrally-peaked X-ray source visible in Chandra data near the center of
G21.5-0.9 and have therefore confirmed this pulsar-SNR association beyond
any doubt. More unexpectedly, we have been able to measure this pulsar's
braking index, n = 2.18, only the 6th such phase-coherent measurement
done in over 1700 pulsars known. We now have a chance to measure the
"second braking index" and place further constraints on the spin-down law
obeyed by this pulsar. This has been done to date for only 2 pulsars.
Finally, we wish to continue timing this pulsar because it will be one of
the prime candidates for gamma-ray detection with the GLAST satellite to
be launched in 2007, and in order to do so we must maintain its timing
solution. For these reasons we request 24 hr for timing PSR J1833-1034
during the present semester.