Skip to main content

Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.

Xspec Home Page

next up previous contents
Next: bexrav: reflected e-folded broken Up: Additive Model Components Previous: bbody, zbbody: blackbody   Contents


bbodyrad: blackbody spectrum, area normalized

A blackbody spectrum with normalization proportional to the surface area.

$\displaystyle A(E) = {{K \times 1.0344 \times 10^{-3} E^2 dE}\over{\exp(E/kT)-1}} $

where

par1= kT temperature keV
norm= K $R_{km}^2/D_{10}^2$, where $R_{km}$ is the source radius in km and $D_{10}$ is the distance to the source in units of 10 kpc.