H0and Odds on Cosmology | Zendy

Andrew H. Jaffe | Zendy

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H₀and Odds on Cosmology

Author(s) -

Andrew H. Jaffe

Publication year - 1996

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/177950

Subject(s) - physics , hubble's law , cepheid variable , lambda , omega , cosmology , cosmological constant , curvature , virgo cluster , age of the universe , astrophysics , theoretical physics , mathematical physics , dark energy , stars , galaxy cluster , quantum mechanics , galaxy , mathematics , geometry

Recent observations by the Hubble Space Telescope of Cepheids in the Virgo cluster imply a Hubble Constant H_0=80\pm17\ km/sec/Mpc. We attempt to clarify some issues of interpretation of these results for determining the global cosmological parameters \Omega and \Lambda. Using the formalism of Bayesian model comparison, the data suggest a universe with a nonzero cosmological constant \Lambda>0, but vanishing curvature: \Omega+\Lambda=1

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