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RAD@home discovery of a one-sided radio jet hitting the companion galaxy

Published online by Cambridge University Press:  11 September 2023

Ananda Hota Open the ORCID record for Ananda Hota [Opens in a new window] ,
Pratik Dabhade  and
Sravani Vaddi
Ananda Hota
Affiliation:
UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Mumbai-400098, India RAD@home Astronomy Collaboratory, Kharghar, Navi Mumbai, 410210, India
Pratik Dabhade
Affiliation:
RAD@home Astronomy Collaboratory, Kharghar, Navi Mumbai, 410210, India Instituto de Astrofísica de Canarias, Calle Vía Láctea, s/n, E-38205, La Laguna, Tenerife, Spain
Sravani Vaddi
Affiliation:
RAD@home Astronomy Collaboratory, Kharghar, Navi Mumbai, 410210, India Arecibo Observatory, NAIC, HC3 Box 53995, Arecibo, Puerto Rico, PR 00612, USA
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Abstract

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Minkowski’s Object and ‘Death Star galaxy’ are two of the famous cases of rare instances when a radio jet has been observed to directly hit a neighbouring galaxy. RAD12, the RAD@home citizen science discovery with GMRT being presented here, is not only a new system being added to nearly half a dozen rare cases known so far but also the first case where the neighbouring galaxy is not a minor/dwarf companion but a galaxy bigger than the host of the radio jet. Additionally, the jet appears to be one-sided and the jet after interaction completely stops and forms a bubble inflating laterally which is unlike previous cases of minor deviation or loss of collimation. Since the nature of radio jet-ISM coupling is poorly understood so far, more discovery of objects like RAD12 will be important to the understanding of galaxy evolution through merger and AGN feedback.

Keywords

galaxies: activegalaxies: jetsgalaxies: evolutiongalaxies: interactionsradio continuum: galaxies
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 35 - 39
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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