期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2014/10/028
关键词
cosmological simulations; cosmic flows; cosmological parameters from LSS
资金
- Danish National Research Foundation
- Danish Council for Independent Research
We have carefully studied how local measurements of the Hubble constant, H-0, can be influenced by a variety of different parameters related to survey depth, size, and fraction of the sky observed, as well as observer position in space. Our study is based on N-body simulations of structure in the standard ACDM model and our conclusion is that the expected variance in measurements of H-0 is far too small to explain the current discrepancy between the low value of H-0 inferred from measurements of the cosmic microwave background (CMB) by the Planck collaboration and the value measured directly in the local universe by use of Type Ia supernovae. This conclusion is very robust and does not change with different assumptions about effective sky coverage and depth of the survey or observer position in space.
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