Discovery of $\gamma$-Ray Pulsations from the Extreme-Spin-Down Millisecond Pulsar PSR J0435+3233

Mengqing Zhang, Shengbin Pei, Pengfei Zhang

Motivated by the recent discovery of PSR~J0435+3233, a millisecond pulsar with an exceptionally large period derivative of $\dot{P}=4.9\times 10^{-17}\mathrm{s}{\mathrm{s}}^{-1}$ and a high s…