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(NAS Colloquium) The Age of the Universe, Dark Matter, and Structure Formation (1998) / Chapter Skim
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X-ray emissions from clusters and groups of galaxies
Pages 72-77

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 72...
... ~ has long been known (6} that x-r~ imaged spec1,osco~ of relied Sums can Mao a determination of Heir total mass use the data in a straight~r~rd fashion. ~ magic tho fundamental assumptions that hydrostatic ~quiEbrium golds :~d abet the only significant source of pressure in tabs Ads is tbelm~l pressure.
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From page 73...
... ~ ~ O 1 o o Ala. Ok #} Optical velocity dip c~mpard With cm~sio~ weighted average x-~^ temperature #< a laps ssmDl~ of 1~ and high (a 0.I4)
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From page 74...
... ~ n~cesssri~ includes the mass of tab smoker clusters and groups Jicb be in Ah foreground and background of the cluster Whereas the x-ray mass estimate ~ strong bided to just 1be caster i~elL ~ one as to smaller maw scam 1ban that of rich cIu$lers. the gravitational lens mass is more biased.
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From page 75...
... Recent samples hosed on deeper ~osat pointed data (1. A bsvc Fund little illdic~tion of strolls cluster luminosity Unction evolution at z ~ 0.6.
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From page 76...
... , , #,. 1 Dank my collaborator ~1 Goddard Space Flight Center Id on the ~C)
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From page 77...
... ~ ~ ~ ~ ~ e Colloquium Paper: ~usbolz~ 2?
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Key Terms

  • luminosity function
  • optical velocity
  • total mass
  • rich clusters
  • total pressure

  • big bang
  • stellar mass
  • mass inside
  • structure formation
  • flight center

  • mass density
  • gas mass
  • goddard space
  • gas phase
  • lens mass

  • cluster luminosity
  • space flight
  • cluster mergers
  • abundance gradients
  • density perturbations

  • fiducial value
  • cluster core
  • serendipitous surveys
  • mass derived
  • comoving volume

  • recent samples
  • luminosity z
  • resolution models
  • mass estimate
  • strong constraints


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