A Comparative Study of BransDicke and General Relativistic Cosmologies in Terms of Observationally Measurable Quantities

Details A Comparative Study of BransDicke and General Relativistic Cosmologies in Terms of Observationally Measurable Quantities A Comparative Study of BransDicke and General Relativistic Cosmologies in Terms of Observationally Measurable Quantities

Sep 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..18...33b&link_type=abstract

Astrophysics and Space Science, Vol. 18, p.33

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

A comparison between general relativistic and Brans-Dicke cosmologies is made in terms of quantities measurable by an observational astronomer. Numerical integration of the Brans-Dicke field equations was employed to find the relationships of the mean density of cosmic matter, the age, and the time derivative of the gravitational constant to the Hubble constant and deceleration para- meter. The difference between general relativistic and Brans-Dicke apparent magnitude-redshift diagrams was found to be negligible even at large redshifts under the assumption of no galactic evolu- tion in absolute magnitude

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