4 citations · 4 across the 2 of their papers we have counts for
11 papers · 1 filter
A test of the Poincare dodecahedral space topology hypothesis with the WMAP CMB data
B. S. Lew, B. F. Roukema
It has been suggested by Roukema and coworkers (hereafter R04) that the topology of the Universe as probed by the ``matched circles'' method using the first year release of the WMA…
A new approach for constraining the Hubble constant from proper motions of radio jets
Bartosz Lew, Boudewijn F. Roukema, Silke Britzen +1
Withdrawn due to a mistake in jets' Doppler factor modeling. An updated version will appear after revisiting this work.
A Solution to the Isolatitude, Equi-area, Hierarchical Pixel-Coordinate System
Boudewijn F. Roukema, Bartosz Lew
Gorski et al (1999b) have earlier presented the outline of a pixelisation-to-spherical-coordinate transformation scheme which simultaneously satisfies three properties which are es…
Observational Constraints on the Topology (Global Geometry) of the Universe
B. F. Roukema
The Universe is a physical object. Physical objects have shapes and sizes. General relativity is insufficient to describe the global shape and size of the Universe: the Hilbert-Ein…
Topological Lensing: Is the Matter Both Here and There?
B. F. Roukema, A. Marecki, S. Bajtlik +1
If the Universe satisfies a perturbed Friedmann-Lema\^ıtre model, then the bright matter (e.g. radio-loud active galactic nuclei, RLAGNs) may be topologically lensed by global geom…
Where the Very Bright Matter is a Standard Ruler
B. F. Roukema, G. A. Mamon, S. Bajtlik
Where's the matter? The answer seems to be: ``distributed according to a power spectrum with at least one feature (local maximum) near 120-130h^-1Mpc''. Analyses of the Iovino, Clo…