N132D in the Large Magellanic Cloud: An Energy Audit of the Brightest Extragalactic Remnant

This paper computes the energy, density and acceleration budgets of N132D from a small set of adopted, published input values, using the relations stated in the Methods and a deposited script that reproduces every number. The Sedov energy at the adopted density is 4.78 in units of 10^51 erg, a factor 4.78 above canonical, which either credits the explosion with unusual power or, more plausibly, reports that the effective density the blast wave has swept is at the high end of the adopted range. The corresponding shock speed is 1.88e+03 km/s and the post-shock temperature 4.21 keV, consistent with the hard X-ray continuum that makes this remnant so prominent in survey data. 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.