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cosmic voids 1galaxy surveys 1large-scale structure 1photometric redshift errors 1void galaxy properties 1

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20242026
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astro-ph.HE2025

AXES-SDSS: Solving the puzzle of X-ray emission of optical galaxy groups via a modified Hausdorff distance

J. Kosowski, A. Finoguenov, E. Tempel +1

The identification of X-ray and CMB sources as galaxy groups and clusters is a prerequisite for cluster cosmology. But the identification of groups, especially nearby ones, suffers…