Original Article

Astrophysics and Space Science

, Volume 308, Issue 1, pp 585-589

First online:

Two decades of pulsar timing of Vela

  • Richard DodsonAffiliated withMarie Curie Fellow Observatorio Astronómico Nacional Email author 
  • , Dion LewisAffiliated withCSIRO
  • , Peter McCullochAffiliated withUniversity of Tasmania

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Pulsar timing at the Mt Pleasant observatory has focused on Vela, which can be tracked for 18 hours of the day. These nearly continuous timing records extend over 24 years allowing a greater insight into details of timing noise, micro glitches and other more exotic effects. In particular we report the glitch parameters of the 2004 event, along with the reconfirmation that the spin up for the Vela pulsar occurs instantaneously to the accuracy of the data. This places a lower limit of about 30 seconds for the acceleration of the pulsar to the new rotational frequency. We also confirm of the low braking index for Vela, and the continued fall in the DM for this pulsar.


Stars: neutron Dense matter Pulsars: individual (PSR B0833-45)


97.60.Jd 97.60.Gb