your ID: 0310 First Name: Weiming Last Name: Zhang Affiliation: Astrophysics Center of Tsinghua University Title: Effect of Eddington Bias on the calculation of Hard X-ray Luminosity Function Authors: Weiming Zhang, Shuang Nan Zhang Topic: 1 Session: poster Abstract: For some X-ray surveys, the low-detection counting statistics, together with a typical steep source number-flux relation, cause more intrinsically faint sources to be detected at apparently higher fluxes than the other way around. We quantitatively estimate the effect of this \"Eddington Bias\" on the calculation of Hard X-ray Luminosity Function and suggest that this effect could not be neglected for the high redshift and low luminosity sources.