A unified framework for X-shaped radio galaxies

Abstract

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.

15 pages, 8 figures, Accepted for publication in the Astrophysical Journal

References in corpus (8)

• The Evolution of Black Hole Mass and Spin in Active Galactic Nuclei
• FIRST `Winged' and `X'-shaped Radio Source Candidates
• Warping and precession in galactic and extragalactic accretion disks
• Black hole masses and starbursts in X-shaped radio sources
• 3D Relativistic MHD numerical simulations of X-shaped radio sources
• X-shaped Radio Galaxies: Optical Properties, Large-scale Environment and Relationship to Radio Structure
• What Are "X-Shaped" Radio Sources Telling Us? II. Properties of a Sample of 87
• GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies

Cited by in corpus (7)

• Modelling X-shaped Radio Galaxies: Dynamical and Emission Signatures from the Back-flow model
• Is jet re-orientation the elusive trigger for star formation suppression in radio galaxies?
• Evidence for radio loud to radio quiet evolution from red and blue quasars
• Characteristics of Powerful Radio Galaxies
• Peculiar black hole accretion rates in AGN with highest star formation rates in the universe
• The unusual active galaxy H1821+643 and the elusive nature of FRI quasars
• The black hole-star formation connection over cosmic time