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 pres...
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.
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