ESO: Alignment of Quasars across Billions of Light-years
Posted: Wed Nov 19, 2014 5:20 pm
Spooky Alignment of Quasars across Billions of Light-years
European Southern Observatory | VLT | 2014 Nov 19
Alignment of quasar polarizations with large-scale structures - Damien Hutsemékers et al
European Southern Observatory | VLT | 2014 Nov 19
VLT reveals alignments between supermassive black hole axes and large-scale structure
New observations with ESO’s Very Large Telescope (VLT) in Chile have revealed alignments over the largest structures ever discovered in the Universe. A European research team has found that the rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other over distances of billions of light-years. The team has also found that the rotation axes of these quasars tend to be aligned with the vast structures in the cosmic web in which they reside.
Quasars are galaxies with very active supermassive black holes at their centres. These black holes are surrounded by spinning discs of extremely hot material that is often spewed out in long jets along their axes of rotation. Quasars can shine more brightly than all the stars in the rest of their host galaxies put together.
A team led by Damien Hutsemékers from the University of Liège in Belgium used the FORS instrument on the VLT to study 93 quasars that were known to form huge groupings spread over billions of light-years, seen at a time when the Universe was about one third of its current age. ...
Alignment of quasar polarizations with large-scale structures - Damien Hutsemékers et al
- arXiv.org > astro-ph > arXiv:1409.6098 > 22 Sep 2014
