Open Access
Fig. 8.
Results of collisional excitation models in PLCK_G244.8+54.9 with RADEX combining HCN, HCO+, and HNC multi-J line ratios. The color map shows the goodness-of-fit χ2 values (for four degrees of freedom), for each combination of n and Tkin and illustrates the parameter degeneracies.
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