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arXiv · 2210.12961

Is jet re-orientation the elusive trigger for star formation suppression in radio galaxies?

David Garofalo·Emily Moravec·Duccio Macconi·Chandra B. Singh
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Abstract

Jet re-orientation associated with the time evolution of radio quasars explains the formation of X-shaped radio galaxies and their preference for isolated environments. But since X-shaped radio galaxies are generally not found in dense environments (e.g. groups/clusters), the jet re-orientation phenomenon for radio galaxies in groups and clusters has been ignored. We take a closer look at the re-orientation of FRI jets with respect to FRII jets, and find that it may constitute the as-yet unidentified trigger for star formation suppression in radio galaxies. We show how the recently explored radio "red geyser" galaxies can be interpreted in this context and ultimately reveal a deeper understanding of why FRII radio galaxies are on one side of the star formation enhancement/suppression divide compared to FRI radio galaxies.

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David Garofalo, Emily Moravec, Duccio Macconi, Chandra B. Singh. 2022-10-24. Is jet re-orientation the elusive trigger for star formation suppression in radio galaxies?. https://doi.org/10.1088/1538-3873%2Fac9714

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