91 citations · 180 across the 7 of their papers we have counts for
7 papers
Optical linear polarization measurements of quasars obtained with the Very Large Telescope at Paranal Observatory
D. Hutsemékers, B. Borguet, D. Sluse +1
We report 87 previously unpublished optical linear polarization measurements of 86 quasars obtained in May and October 2008, and from April to July 2015 with the Focal Reducer and…
Cosmic anisotropies from quasars: from polarization to structural-axis alignments
Vincent Pelgrims
The comparison of the orientations of the optical-polarization vectors of quasars that are separated by billions of light-years has led to the discovery that they are aligned inste…
Evidence for the alignment of quasar radio polarizations with large quasar group axes
Vincent Pelgrims, Damien Hutsemékers
Recently, evidence has been presented for the polarization vectors from quasars to preferentially align with the axes of the large quasar groups (LQG) to which they belong. This re…
A new test of uniformity for object orientations in astronomy
Vincent Pelgrims
We briefly present a new coordinate-invariant statistical test dedicated to the study of the orientations of transverse quantities of non-uniformly distributed sources on the celes…
Polarization alignments of radio quasars in JVAS/CLASS surveys
Vincent Pelgrims, Damien Hutsemékers
We test the hypothesis that the polarization vectors of flat-spectrum radio sources (FSRS) in the JVAS/CLASS 8.4-GHz surveys are randomly oriented on the sky. The sample with robus…
Alignment of quasar polarizations with large-scale structures
Damien Hutsemékers, Lorraine Braibant, Vincent Pelgrims +1
We have measured the optical linear polarization of quasars belonging to Gpc-scale quasar groups at redshift z ~ 1.3. Out of 93 quasars observed, 19 are significantly polarized. We…
A new analysis of quasar polarisation alignments
Vincent Pelgrims, Jean-Rene Cudell
We propose a new method to analyse the alignment of optical polarisation vectors from quasars. This method leads to a definition of intrinsic preferred axes and to a determination…