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Understanding the interplay between jets and ISM for winged radio galaxies

Published online by Cambridge University Press:  11 September 2023

Gourab Giri Open the ORCID record for Gourab Giri [Opens in a new window]  and
Bhargav Vaidya
Gourab Giri
Affiliation:
Department of Astronomy, Astrophysics and Space Engineering, Indian Institute of Technology Indore, Simrol 453552, Madhya Pradesh, India email: gourab@iiti.ac.in, bvaidya@iiti.ac.in
Bhargav Vaidya
Affiliation:
Department of Astronomy, Astrophysics and Space Engineering, Indian Institute of Technology Indore, Simrol 453552, Madhya Pradesh, India email: gourab@iiti.ac.in, bvaidya@iiti.ac.in
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Abstract

In this work, we investigate the formation and early evolution phase of X-shaped radio galaxies using the Back-flow model. We show how the X-like winged morphology evolves over time in a tri-axial ambient medium, naturally. At this early stage of formation, we demonstrated that both the pair of jet lobes are actively pushing the ambient material out of their path of propagation, forming (X-ray) cavities that are surrounded by a shocked shell (X-ray bright rims) of swept materials. We also noticed how turbulent the wing is in comparison to the active lobe, generating sites of random shocks, indicating that the wings are not passively evolving structures. This study demonstrated that the ambiguous morphology observed in jets is also imprinted over the ambient medium, providing an alternative perspective in understanding the underlying physical process causing such ambiguities. Finally, we indicate that shearing instabilities cause mixing of ambient material at the shearing interface.

Keywords

Galaxies: jetsgalaxies: activeMagnetohydrodynamics (MHD)Methods: numerical
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 27 - 30
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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