The reference most likely refers to the Planck 2013 results: XXVII. Do-it-yourself (DIY) re-analysis of the cosmic microwave background (CMB) or a related publication from the Planck Collaboration released in 2014 . Specifically, it often appears in academic or data analysis contexts involving the Sunyaev-Zeldovich (SZ) sources and the second Planck catalogue.
If two shapes are :
"Planck 2015 results. XXVII. The Second Planck Catalogue of Sunyaev-Zeldovich Sources" (PSZ2) presents a 1,653-source all-sky catalog of galaxy clusters identified via the Sunyaev-Zeldovich effect [26]. Finalized in 2014-2015, the paper utilizes multiple matched-filter algorithms and extensive multi-wavelength validation to provide a definitive sample for cosmological studies [26]. The full paper is available via arXiv and Astronomy & Astrophysics. p xxvii 2014 10a
Identify corresponding lengths (usually heights or radii) for the two shapes. $$ \textLength Ratio (k) = \frac\textLength of Shape 1\textLength of Shape 2 $$ "P XXVII 2014 10A" The reference most likely
: A key discovery was a population of galaxy clusters that were "missing" from previous X-ray surveys but visible to Planck, helping to complete our map of the local Universe. Why This Matters Today Mathematically Similar If two shapes are : "Planck
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