Study of Errors in Absolute Flux Density Measurements of Cassiopeia A,

摘要

An error analysis for absolute flux density measurements of Cassiopeia A is discussed. The lower-bound quadrature-accumulation error for state-of-the-art measurements of the absolute flux density of Cas A around 7GHz is estimated to be 1.71% for 3sigma limits. The corresponding practicable error for the careful but not state-of-the-art measurement is estimated to be 4.46% for 3sigma limits.