Cosmic complementarity: probing the acceleration of the Universe

Details Cosmic complementarity: probing the acceleration of the Universe Cosmic complementarity: probing the acceleration of the Universe

1998-05-11

arxiv.org/abs/astro-ph/9805117v1

Astronomy and Astrophysics

Astrophysics

Submitted to ApJL. Color figures and links at http://www.sns.ias.edu/~max/complementarity.html (faster from the US), from ht

Scientific paper

We assess the accuracy with which Omega and Lambda can be measured by combining various types of upcoming experiments. Useful expressions for the Fisher information matrix are derived for classical cosmological tests involving luminosity (eg, SN Ia), angular size, age and number counts. These geometric probes are found to be quite complementary both to each other and to inferences from cluster abundance and the cosmic microwave background (CMB). For instance, a joint analysis of SN Ia and CMB reduces the error bars by about an order of magnitude compared to a separate analysis of either data set.

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