Mass estimates of X-ray clusters

@article{Evrard1996MassEO,
  title={Mass estimates of X-ray clusters},
  author={August E. Evrard and Christopher Alan Metzler and Julio F. Navarro},
  journal={The Astrophysical Journal},
  year={1996},
  volume={469},
  pages={494-507}
}
We use cosmological gasdynamic simulations to investigate the accuracy of galaxy cluster mass estimates based on X-ray observations. The experiments follow the formation of clusters in different cosmological models and include the effects of gravity, pressure gradients, and hydrodynamical shocks. A subset of our ensemble also allows for feedback of mass and energy from galactic winds into the intracluster medium. We find that mass estimates based on the hydrostatic, isothermal {beta}-model are… 

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  • S. Allen
  • Physics
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 2002
TLDR
It is shown that the Chandra data and independent gravitational lensing studies provide consistent answers on the mass distributions in the clusters, and the 'virial relations' linking the masses, X–ray temperatures and luminosities of galaxy clusters exhibit a form in good agreement with the predictions from numerical simulations.
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