Image of a Planet around Fomalhaut

Perhaps the debris cloud was formed through the tidal disruption of an asteroid passing too close to a planet? It's not like the reasons to believe there's a planet sculpting the inner edge of the Fomalhaut disk aren't still there.

Tidal disruption versus planetesimal collisions as possible origins for the dispersing dust cloud around Fomalhaut
https://arxiv.org/abs/2007.06912

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So can we now rename it to Da-gone?

Obviously this as-yet undetected planet would need to be named Daback.

Another "in case it's a neutron star" study...

Jones & Sun "Search for continuous gravitational waves from Fomalhaut b in the second Advanced LIGO observing run with a hidden Markov model"
https://arxiv.org/abs/2007.08732

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After passing the above-threshold candidates through a hierarchy of vetoes, one candidate slightly above the 1% false alarm probability threshold remains for further scrutiny. No strong evidence of continuous waves is found. We present the frequentist strain upper limits at 95% confidence.

New attempts to find a planet around Fomalhaut

Searching for Planets Orbiting Fomalhaut with JWST/NIRCam
https://arxiv.org/abs/2310.15028