MSH 15-52 and PSR B1509-58: A High-Field Pulsar's Wind Budget and Nebular Reach

This paper computes the energy, density and acceleration budgets of MSH 15-52 from a small set of adopted, published input values, using the relations stated in the Methods and a deposited script that reproduces every number. Timing gives a spin-down power of 1.77e+37 erg per second, a characteristic age of 1.55e+03 years and a surface field of 1.54e+13 gauss, among the highest known for a rotation-powered pulsar. Spread over the adopted ten-parsec nebula, the wind pressure at the edge falls to 4.92e-14 dyn per square centimetre, and the termination radius against the adopted confining pressure is 0.702 parsecs, so most of the nebula's volume is a transport region, not a production region. The calculation is a computation from stated assumptions, not a measurement, and each headline result is reported together with the diagnostic that tests whether the assumed evolutionary phase applies to this object.