X-Shaped Radio Galaxy
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. X-shaped (or "winged") radio galaxies are a class of extragalactic radio source that exhibit two, low-surface-brightness radio lobes oriented at an angle to the active, or high-surface-brightness, lobes. Both sets of lobes pass symmetrically through the center of the elliptical galaxy that is the source of the lobes, giving the radio galaxy an X-shaped morphology as seen on radio maps. X-shaped sources were first described by J. P. Leahy and P. Parma in 1992, who…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. X-shaped (or "winged") radio galaxies are a class of extragalactic radio source that exhibit two, low-surface-brightness radio lobes oriented at an angle to the active, or high-surface-brightness, lobes. Both sets of lobes pass symmetrically through the center of the elliptical galaxy that is the source of the lobes, giving the radio galaxy an X-shaped morphology as seen on radio maps. X-shaped sources were first described by J. P. Leahy and P. Parma in 1992, who presented a list of 11 such objects. The X-shaped galaxies have received much attention following the suggestion by David Merritt and Ron Ekers in 2002 that they might be the sites of spin-flips associated with the recent coalescence of two supermassive black holes.