Weighing the giants - V. Galaxy cluster scaling relations

Adam B. Mantz, Steven W. Allen, R. Glenn Morris, Anja von der Linden, Douglas E. Applegate, Patrick L. Kelly, David L. Burke, David Donovan, Harald Ebeling

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107 Scopus citations


We present constraints on the scaling relations of galaxy cluster X-ray luminosity, temperature and gas mass (and derived quantities) with mass and redshift, employing masses from robust weak gravitational lensing measurements. These are the first such results obtained from an analysis that simultaneously accounts for selection effects and the underlying mass function, and directly incorporates lensing data to constrain total masses. Our constraints on the scaling relations and their intrinsic scatters are in good agreement with previous studies, and reinforce a picture in which departures from self-similar scaling laws are primarily limited to cluster cores. However, the data are beginning to reveal new features that have implications for cluster astrophysics and provide new tests for hydrodynamical simulations.We find a positive correlation in the intrinsic scatters of luminosity and temperature at fixedmass, which is related to the dynamical state of the clusters. While the evolution of the nominal scaling relations over the redshift range 0.0 < z < 0.5 is consistent with self-similarity, we find tentative evidence that the luminosity and temperature scatters, respectively, decrease and increase with redshift. Physically, this likely related to the development of cool cores and the rate of major mergers. We also examine the scaling relations of redMaPPer richness and Compton Y from Planck.While the richness-mass relation is in excellent agreement with recent work, the measured Y-mass relation departs strongly from that assumed in the Planck cluster cosmology analysis. The latter result is consistent with earlier comparisons of lensing and Planck scaling relation-derived masses.

Original languageEnglish (US)
Pages (from-to)3582-3603
Number of pages22
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© 2016 The Authors.


  • Galaxies: clusters: intracluster medium
  • Gravitational lensing: weak
  • X-rays: galaxies: clusters


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