Radio-Optical Alignment of Radio Galaxies. (arXiv:1908.09989v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Najar_L/0/1/0/all/0/1">Lizbeth A. Vazquez Najar</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Andernach_H/0/1/0/all/0/1">Heinz Andernach</a>
Images from recent radio surveys were used to determine the radio position
angles for over 2000 extended radio galaxies with host galaxies brighter than
m$_{r}sim$18 mag. For 1509 of these their optical axis ratios were obtained,
and for a subset of 857 also their major axis position angle. It is confirmed
that the majority of radio galaxies have their jets or lobes ejected within
$sim30^{circ}$ of the optical minor axis of their host, but no evidence is
found for the minor-axis alignment to be stronger for physically larger radio
sources, nor for the presence of a secondary population of brightest cluster
galaxies with radio axes near to parallel to their optical major axes.
Images from recent radio surveys were used to determine the radio position
angles for over 2000 extended radio galaxies with host galaxies brighter than
m$_{r}sim$18 mag. For 1509 of these their optical axis ratios were obtained,
and for a subset of 857 also their major axis position angle. It is confirmed
that the majority of radio galaxies have their jets or lobes ejected within
$sim30^{circ}$ of the optical minor axis of their host, but no evidence is
found for the minor-axis alignment to be stronger for physically larger radio
sources, nor for the presence of a secondary population of brightest cluster
galaxies with radio axes near to parallel to their optical major axes.
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