Slide 18 of 59
Notes:
If we can assume that magnetic braking is responsible for the slowing-down of pulsars, then we can calculate the magnetic field strengths at the surface. From observed dP/dt, we find that magnetic field strengths of most pulars typically lie in the range of 2 million to 2 billion Tesla (but weaker for the millisecond pulsars, magnetic field B = 3e15 sqrt(P x dP/dt).