http://arxiv.org/abs/1912.10494
We propose a radically different picture for X-shaped radio galaxies compared to existing models as transition objects between cold mode accreting low spinning retrograde black holes and low spinning prograde black holes. The model explains their smaller average black hole masses, their general aversion for cluster compared to isolated environments, the negligible difference in spectral index between primary and secondary jets despite a time difference in their formation, their absence among the most powerful radio quasars and radio galaxies, and their connection to the elusive FRI quasar class, among others. The key to their formation is cold gas accretion onto Schwarzschild black holes.
D. Garofalo, R. Joshi, X. Yang, et. al.
Tue, 24 Dec 19
48/79
Comments: 15 pages, 8 figures, Accepted for publication in the Astrophysical Journal
You must be logged in to post a comment.