This loads a font easier to read for people with dyslexia.
This renders the document in high contrast mode.
This renders the document as white on black
This can help those with trouble processing rapid screen movements.
The Australia Telescope National Facility Colloquium
15:30-16:30 Thu 21 Apr 2011

ATNF Marsfield Lecture Theatre

John Peacock

(IfA, University of Edinburgh)

Probing gravity with galaxy surveys - John Peacock Colloquium

Modifications of gravity are studied with growing interest in
cosmology. A strong motivation comes from the puzzling existence of dark
energy; since the existence of DE is only inferred from the Friedmann
equation, it may be that DE does not exist, but that a different
equation should apply. A way to tell is to look for evidence of
non-standard gravity on smaller scales, via the growth of large-scale
structure. This can be measured via redshift-space distortions of
clustering, and this talk shows new measurements using 160,000 redshifts
from the GAMA survey. At the 10% level, the results from 6 different
galaxy subsets are all consistent with the standard LCDM model. Future
projects offering improved accuracy will be reviewed.

More information


Bjorn Emonts

Other Colloquia
What's On