4 papers · 1 filter
Interpolation of Discretely-Sampled Density Fields
Will Saunders, Bill E. Ballinger
We present a new technique for the interpolation of discretely-sampled non-negat ive scalar fields across regions of missing data. Any set of basis functions can be used, though th…
The Halo Formation Rate and its link to the Global Star Formation Rate
W. J. Percival, L. Miller, W. E. Ballinger
The star formation history of the universe shows strong evolution with cosmological epoch. Although we know mergers between galaxies can cause luminous bursts of star formation, th…
Density and Velocity Fields from the PSCz Survey
Will Saunders, Enzo Branchini, Luis Teodoro +17
We present the results for the predicted density and peculiar velocity fields and the dipole from the PSCz survey of 15,000 IRAS galaxies over 84% of the sky. We find a significant…
Cosmological Parameter Estimation from the CMB
Andy Taylor, Alan Heavens, Bill Ballinger +1
We discuss the problems of applying Maximum Likelihood methods to the CMB and how one can make it both efficient and optimal. The solution is a generalised eigenvalue problem that…