PSR J1631-4722: the Discovery of a Young and Energetic Pulsar in the Supernova Remnant G336.7+0.5

Detecting a pulsar associated with a supernova remnant (SNR) and/or pulsar wind nebula (PWN) is crucial for unraveling its formation history and pulsar wind dynamics, yet the association with a radio pulsar is observed only in a small fraction of known SNRs and PWNe. In this paper, we report the discovery of a young pulsar J1631-4722, associated with the Galactic SNR G336.7+0.5 using Murriyang, Commonwealth Scientific and Industrial Research Organisation (CSIRO)'s Parkes radio telescope. It is also potentially associated with a PWN revealed by the Rapid ASKAP (Australian Square Kilometre Array Pathfinder) Continuum Survey (RACS). This 118 ms pulsar has a high dispersion measure of similar to 873 pc cm(-3) and a rotation measure of -1004 rad m(-2). Because of such a high DM, at frequencies below 2 GHz, the pulse profile is significantly scattered, making it effectively undetectable in previous pulsar surveys at similar to 1.4 GHz. Follow-up observations yield a period derivative of P-center dot=5.5x10(-14), implying a characteristic age, tau(c)=33.9 kyr, and spin-down luminosity, E-center dot=1.3x10(36 )erg s(-1). PSR J1631-4722, with its high spin-down luminosity and potential link to a PWN, stands out as a promising source of the high-energy gamma-ray emission observed in the region.