Optical radiation from the Crab pulsar

摘要: Possible mechanisms for producing the optical radiation from Crab pulsar are proposed and discussed. There severe difficulties in interpreting as being produced by an incoherent process, whether it be synchrotron radiation, inverse-Compton or curvature radiation. It is proposed, therefore, that part of spectrum coherent. In polar cap model, a small bunch electrons positrons forms near each primary electron result pair-production cascade process. Turbulent electric field components associated with large-scale bunching may lead to separation space energy, coherent electrons, positrons, both. Calculations, which involve number simplifying assumptions, indicate can understood this way if mass star approximately 0.3 solar mass. Various consequences subjected observational test,