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bbodyrad: blackbody spectrum, area normalized


A blackbody spectrum with normalization proportional to the surface area.

A(E) = K*1.0344*10^-3 E^2*dE/(exp(E/kT)-1)



temperature kT, keV

norm, K

R_km^2/D_10^2, where R_km is the source radius in km, and, D10 is the distance to the source in units of 10 kpc