http://arxiv.org/abs/1910.04773
We perform the calibration of the X-ray luminosity–mass scaling relation on a sample of 344 CODEX clusters with $z<0.66$ using the dynamics of their member galaxies. Spectroscopic follow-up measurements have been obtained from the SPIDERS survey, leading to a sample of 6,658 red member galaxies. We use the Jeans equation to calculate halo masses, assuming an NFW mass profile and analyzing a broad range of anisotropy profiles. With a scaling relation of the form $L_{\rm{X}} \propto \text{A}{\rm{X}}M{\text{200c}}^{\text{B}{\rm{X}}} E(z)^2 (1+z)^{\gamma{\rm{X}}}$, we find best fit parameters $ \text{A}{\rm{X}}=5.7^{+0.4}{-0.5} (\pm0.6)\times10^{43}\,\mathrm{erg\,s^{-1}}$, $\text{B}{\rm{X}}=2.5\pm0.2(\pm0.07)$, $\gamma{\rm{X}}=-2.6^{+1.1}{-1.2}(\pm0.74)$, where we include systematic uncertainties in parentheses and for a pivot mass and redshift of $3\times10^{14}M\odot$ and 0.16, respectively. We compare our constraints with previous results, and we combine our sample with the SPT SZE–selected cluster subsample observed with \XMM\, extending the validity of our results to a wider range of redshifts and cluster masses.
R. Capasso, J. Mohr, A. Saro, et. al.
Mon, 14 Oct 19
43/69
Comments: 12 pages, 7 figures, submitted for publication in MNRAS
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