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- Macquarie UniversityAU873 papers
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54 papers · 2 filters
The 2dF Galaxy Redshift Survey: the luminosity function of cluster galaxies
Roberto De Propris, M. Colless, S. Driver +27
We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range , and is…
Microlensing induced absorption line variability
Geraint F. Lewis, Rodrigo A. Ibata
Gravitational microlensing has proven to be a powerful probe of both the structure at the heart of quasars and the mass function of compact objects in foreground lenses. This paper…
The 2dF Galaxy Redshift Survey: correlation functions, peculiar velocities and the matter density of the Universe
E. Hawkins, S. Maddox, S. Cole +27
We present a detailed analysis of the two-point correlation function, from the 2dF Galaxy Redshift Survey (2dFGRS). We estimate the redshift-space correlation function, xi(s), from…
Nanolensing of gamma-ray bursts
Mark A. Walker, Geraint F. Lewis
All quasars vary in their optical flux on a time-scale of years, and it has been proposed that these variations are principally due to gravitational lensing by a cosmologically dis…
Rapid Variability and Annual Cycles in the Characteristic Time-scale of the Scintillating Source PKS 1257-326
H. E. Bignall, D. L. Jauncey, J. E. J. Lovell +6
Rapid radio intra-day variability (IDV) has been discovered in the southern quasar PKS 1257-326. Flux density changes of up to 40% in as little as 45 minutes have been observed in…
2dF Spectroscopy of M104 Globular Clusters
Terry Bridges, Ken Freeman, Katherine Rhode +1
We present preliminary results of 2dF spectroscopy of globular clusters in The Sombrero (M104). We find 56 new clusters, and compile a total sample of 103 velocities combined with…