3 papers
astro-ph2006
Deceleration without dark matter
J C Jackson, Marina Dodgson
In homogeneous isotropic cosmological models the angular size theta of a standard measuring rod changes with redshift z in a manner that depends upon the parameters of the model. I…
astro-ph2001
Decelerating universes older than their Hubble times
J. C. Jackson, Marina Dodgson
Recent observations suggest that Hubble's constant is large, and hence that the Universe appears to be younger than some of its constituents. The traditional escape route, which as…
astro-ph2001
Determination of cosmology and evolution from K-band magnitude-redshift and number count observations
J. C. Jackson, Marina Dodgson
We determine cosmological and evolutionary parameters from the 3CR K-band Hubble diagram and K-band number counts, assuming that the galaxies in question undergo pure luminosity ev…