The Irregular Spin-down Evolution of Radio Pulsars

Explore the complex rotational behavior of radio pulsars in this astronomy lecture that challenges conventional understanding of pulsar spin-down mechanics. Delve into long-term observational data that reveals stochastic irregularities in pulsar rotation and unexpected spin-up events known as rotational glitches. Learn about recent research findings from Murriyang (the Parkes 64-m radio telescope) observations spanning decades, examining braking torque measurements across dozens of young pulsars. Understand the relationship between impulsive spin-up events and neutron star interior dynamics, while discovering the widespread occurrence of correlated variations between spin-down rates and radio emissions throughout the pulsar population. Gain insights into why some young pulsars exhibit unexplainably rapid spin-down evolution that defies traditional radiative mechanism theories.