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Title: Restarting engine in an X-shaped radio galaxy
Authors: Saripalli, Lakshmi
Subrahmanyan, Ravi
Laskar, Tanmoy
Koekemoer, A.
Issue Date: 2007
Publisher: SISSA
Citation: Proceedings of a conference: From planets to dark energy: the modern radio universe held in Manchester, UK. Proceedings of Science, MRU-130, SISSA
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.
Description: Open Access
ISSN: 1824-8039
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Copyright: 2007 The authors
Appears in Collections:Research Papers (A&A)

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