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arXiv · 0806.3518

Restarting engine in an X-shaped radio galaxy

Lakshmi Saripalli·Ravi Subrahmanyan·Tanmoy Laskar·Anton Koekemoer
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Abstract

J2018-556, an X-shaped FR-I radio galaxy provides a unique opportunity to discuss the formation scenarios for the extended structures seen in this class of radio sources. An understanding of the origin of X-shaped source structures has important implications for radio galaxy models as well as black hole-black hole mergers. Guided by our ATCA radio continuum observations of J2018-556 we discuss evidence in support of 'wings' forming as a result of a redirection of backflows by asymmetric gas distribution associated with the host galaxy. Formation models invoking interaction between backflows with asymmetric environments seem the preferred model for X-shaped radio sources despite apparent discoveries of X-shaped FR-I radio sources.

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Lakshmi Saripalli, Ravi Subrahmanyan, Tanmoy Laskar, Anton Koekemoer. 2008-06-21. Restarting engine in an X-shaped radio galaxy. https://arxiv.org/abs/0806.3518

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