Optimal filtering of optical and weak lensing data to search for galaxy clusters: application to the COSMOS field

  title={Optimal filtering of optical and weak lensing data to search for galaxy clusters: application to the COSMOS field},
  author={Fabio Bellagamba and Matteo Maturi and Takashi Hamana and Massimo Meneghetti and Satoshi Miyazaki and Lauro Moscardini},
  journal={Monthly Notices of the Royal Astronomical Society},
Galaxy clusters are usually detected in blind optical surveys via suitable filtering methods. We present an optimal matched filter which maximizes their signal-to-noise ratio by taking advantage of the knowledge we have of their intrinsic physical properties and of the data noise properties. In this paper we restrict our application to galaxy magnitudes, positions and photometric redshifts if available, and we also apply the filter separately to weak lensing data. The method is suitable to be… 
Euclid preparation
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