The Age of the Universe: Concordance

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Arguments on the Age of the Universe, t{sub u}, are reviewed. The four independent age determination techniques are: dynamics (Hubble Age and deceleration); oldest stars (globular clusters); radioactive dating (nucleocosmochronology); and white dwarf cooling (age of the disk). While discussing all four, this review will concentrate more on nucleocosmochronology due in part to recent possible controversies there. It is shown that all four techniques are in general agreement, which is an independent argument in support of a catastrophic creation event such as the Big Bang. It is shown that the most consistent range of cosmological ages is for 12 {approx ... continued below

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Pages: (18 p)

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Schramm, D.N. (Chicago Univ., IL (USA) Fermi National Accelerator Lab., Batavia, IL (USA)) December 1, 1989.

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Arguments on the Age of the Universe, t{sub u}, are reviewed. The four independent age determination techniques are: dynamics (Hubble Age and deceleration); oldest stars (globular clusters); radioactive dating (nucleocosmochronology); and white dwarf cooling (age of the disk). While discussing all four, this review will concentrate more on nucleocosmochronology due in part to recent possible controversies there. It is shown that all four techniques are in general agreement, which is an independent argument in support of a catastrophic creation event such as the Big Bang. It is shown that the most consistent range of cosmological ages is for 12 {approx lt} t{sub u} {approx lt} 17Gyr. It is argued that the upper bound from white dwarf cooling is only {approximately}10Gyr due to the disk of the Galaxy probably forming several Gyr after the Big Bang itself. Only values of the Hubble constant, H{sub 0} {approx lt} 60km/sec/Mpc, are consistent with the other age arguments if the universe is at its critical density. An interesting exception to this limit is noted for the case of a domain wall dominated universe where ages as large as 2/H{sub 0} are possible. 42 refs., 1 fig., 1 tab.

Physical Description

Pages: (18 p)

Notes

NTIS, PC A03/MF A01; OSTI; INIS; GPO Dep.

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  • 5. IAP astrophysics meeting on astrophysical ages and dating methods, Paris (France), 26-29 Jun 1989

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  • Other: DE90004971
  • Report No.: FNAL/C-89-253A
  • Report No.: CONF-8906206--4
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 5018696
  • Archival Resource Key: ark:/67531/metadc1061727

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  • December 1, 1989

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  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 8:29 p.m.

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Schramm, D.N. (Chicago Univ., IL (USA) Fermi National Accelerator Lab., Batavia, IL (USA)). The Age of the Universe: Concordance, article, December 1, 1989; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1061727/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.