I'm looking for the parameters $r_c$, $rho_0$ and $beta$ in a $beta$-profile fit of the Virgo cluster's ICM density. I just can't find a reference for it. Unlike for Coma (Abell 1656) where it's in Mohr et. al. 1999.
Beta profile:
$$rho(r) = rho_0 left[ 1+ left(frac{r}{r_c}right)^2 right]^{-frac{3beta}{2}}$$
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