We present the discovery of PSR J1410 - 6132 , a 50-ms pulsar found during a high-frequency survey of the Galactic plane , using a 7-beam 6.3-GHz receiver on the 64-m Parkes radio telescope .
The pulsar lies within the error box of the unidentified EGRET source 3EG J1410 - 6147 , has a characteristic age of 26 kyr and a spin-down energy of 10 ^ { 37 } erg s ^ { -1 } .
It has a very high dispersion measure of 960 \pm 10 cm ^ { -3 } pc and the largest rotation measure of any pulsar , RM= +2400 \pm 30 rad m ^ { -2 } .
The pulsar is very scatter-broadened at frequencies of 1.4 GHz and below , making pulsed emission almost impossible to detect .
Assuming a distance of 15 kpc , the pulsar ’ s spin-down energy and a \gamma -ray efficiency factor of \sim 10 per cent is sufficient to power the \gamma -ray source .
We therefore believe we have identified the nature of 3EG J1410 - 6147 .
This new discovery suggests that deep targeted high-frequency surveys of inner-galaxy EGRET sources could uncover further young , energetic pulsars .