Quantifying Dual AGN Detectability

Despite the importance of dual AGN to fields such as galaxy formation and gravitational waves, there is no quantitative method for determining whether a given X-ray observation originates from one or two AGN for sources with small (< 0.5″) angular separations. Thus, there exists the possibility that we have over- or under-estimated the rate of dual AGNs. Dual AGNs with small separations can only be distinguished from point sources with advanced analysis. We will develop a Bayesian framework to quantitatively evaluate the odds ratio that a given source is single or dual. This program will allow true surveys and a significant advancement of understanding. The Bayesian framework will also be useful to a number of other fields and will be released to the community.