Quote from: dead cat
The accretion disc which exists outside the event horizon of a Black hole emits lots of EM radiation. ...This radiation is likely what we see emitted from PulsarsIt is true that the plasma of an accretion disk can produce bursty X-Rays that vary on very short timeframes. But these bursts tend to be somewhat erratic.
However, the rock-steady regular pulses from a pulsar are thought to come from the rock-solid crust of a neutron star.