• Corpus ID: 238743849

A Malmquist-like bias in the inferred areas of diamond caustics and the resulting bias in inferred time delays for gravitationally lensed quasars

@inproceedings{Baldwin2021AMB,
  title={A Malmquist-like bias in the inferred areas of diamond caustics and the resulting bias in inferred time delays for gravitationally lensed quasars},
  author={Derek Baldwin and Paul L. Schechter},
  year={2021}
}
Quadruply lensed quasars are visible only when the source quasar lies within the diamond caustic of the lensing galaxy. This condition creates a Malmquist-like selection effect in the population of observed quadruply lensed quasars, increasing the true caustic area. The inferred areas are therefore biased low by an amount proportional to the square of the uncertainty in the natural logarithm of the area, σlnA. The inferred time delays, τ , vary with the caustic area of the lensing galaxy as √ A… 

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