LoCuSS: Calibrating Mass-Observable Scaling Relations for Cluster Cosmology With Subaru Weak-Lensing Observations

Research output: Contribution to journalArticle


  • N Okabe
  • YY Zhang
  • A Finoguenov
  • M Takada
  • K Umetsu
  • T Futamase

Colleges, School and Institutes


We present a joint weak-lensing/X-ray study of galaxy cluster mass-observable scaling relations motivated by the critical importance of accurate calibration of mass proxies for future X-ray missions, including eROSITA. We use a sample of 12 clusters at z similar or equal to 0.2 that we have observed with Subaru and XMM-Newton to construct relationships between the weak-lensing mass (M) and three X-ray observables, gas temperature (T), gas mass (M-gas), and quasi-integrated gas pressure (Y-X), at overdensities of Delta = 2500, 1000, and 500 with respect to the critical density. We find that M-gas at Delta


Original languageEnglish
Pages (from-to)875-885
Number of pages11
JournalThe Astrophysical Journal
Issue number1
Publication statusPublished - 1 Sep 2010


  • galaxies: clusters: general, gravitational lensing: weak, dark matter, cosmology: observations, X-rays: galaxies: clusters