Thermal Analysis of the Pioneer Anomaly: A method to estimate radiative   momentum transfer
  We present a methodology based on point-like Lambertian sources that enables one to perform a reliable and comprehensive estimate of the overall thermally induced acceleration of the Pioneer 10 and 11 spacecraft. We show, by developing a sensitivity analysis of the several parameters of the model, that one may achieve a valuable insight on the possible thermal origin of the so-called Pioneer anomaly. 
Orfeu Bertolami, Frederico Francisco, Paulo J. S. Gil, Jorge P\'aramos