378 citations · 489 across the 11 of their papers we have counts for
14 papers
Are WC9 Wolf-Rayet stars in colliding-wind binaries?
P. M. Williams, K. A. van der Hucht, G. Rauw
We present results from a spectroscopic search for massive companions to dust-making Galactic WC9 stars as a step to testing the paradigm that dust formation in these systems requi…
Large scale correlations of quasar polarisation vectors: Hints of extreme scale structures?
Remi A. Cabanac, Damien Hutsemekers, Dominique Sluse +1
A survey measuring quasar polarization vectors has been started in two regions towards the North and South Galactic Poles. Here, We review the discovery of significant correlations…
The semijoin algebra and the guarded fragment
Dirk Leinders, Jerzy Tyszkiewicz, Jan Van den Bussche
The semijoin algebra is the variant of the relational algebra obtained by replacing the join operator by the semijoin operator. We discuss some interesting connections between the…
Primordial constraint on the spatial dependence of the Newton constant
V. Boucher, J. -M. Gerard, P. Vandergheynst +1
A Nordtvedt effect at cosmological scales affects the acoustic oscillations imprinted in the cosmic microwave background. The gravitational baryonic mass density of the universe is…
Cosmic microwave background constraints on the strong equivalence principle
V. Boucher, J. -M. Gerard, P. Vandergheynst +1
We study the effect of a violation of the strong equivalence principle (SEP) on the cosmic microwave background (CMB). Such a violation would modify the weight of baryons in the pr…
Classical Limit of Quantum Dynamical Entropies
F. Benatti, V. Cappellini, M. De Cock +2
Two non-commutative dynamical entropies are studied in connection with the classical limit. For systems with a strongly chaotic classical limit, the Kolmogorov-Sinai invariant is r…