Locations of particle production. Magnetic latitude ρ is plotted against log altitude (in stellar radii), for photons of ﹩\varepsilon =10,000﹩ injected into a cone with angle parameter ﹩\mu =1-\mathrm{cos}\,\theta _{\mathrm{max}\,}=10^{-6}﹩. The left column shows sites of lepton pair creation, and the right column shows sites of energetic (﹩\epsilon > 2﹩) synchrotron photon emission. The number of starting photons was 300, 200, and 300 for ﹩B_{*}=10^{11},\ 10^{12},﹩ and ﹩10^{13}﹩ G, respectively. At smaller angles (e.g., for ﹩1/ \gamma _{b}﹩ beaming), the only difference in this diagram is the disappearance of the low‐altitude burst of pairs and synchrotron photons in the ﹩10^{13}﹩ G field.