We identified a highly-polarized , steep-spectrum radio source in a deep image with the Australian Square Kilometre Array Pathfinder ( ASKAP ) telescope at 888 MHz .
After considering and rejecting a stellar origin for this source , we discovered a new millisecond pulsar ( MSP ) using observations from the Parkes radio telescope .
This pulsar has period 2.77 ms and dispersion measure 228.27 { pc cm } ^ { -3 } .
Although this pulsar does not yet appear to be particularly remarkable , the short spin period , wide profile and high dispersion measure do make it relatively hard to discover through traditional blind periodicity searches .
Over the course of several weeks we see changes in the barycentric period of this pulsar that are consistent with orbital motion in a binary system , but the properties of any binary need to be confirmed by further observations .
While even a deep ASKAP survey may not identify large numbers of new MSPs compared to the existing population , it would be competitive with existing all-sky surveys and could discover interesting new MSPs at high Galactic latitude without the need for computationally-expensive all-sky periodicity searches .