SN 2011kl is broadly consistent with an LFBOT light-curve model and ULGRB hosts match LFBOT/LGRB environments, supporting a shared He-CO merger progenitor for a subset of both classes.
arXiv preprint arXiv:2601.18926 , year=
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A synchrotron forward-shock model with confined broken-power-law CSM explains FBOT radio diversity via shock transition out of the dense shell, yielding trans-relativistic velocities of 0.1-0.5c and high but brief mass-loss rates of 10^{-4} to 10^{-3} solar masses per year.
TESS and ZTF observations of 12 LFBOTs yield no late-time flares after SSO attribution, constraining central engine lifetimes to hundreds of days or less.
citing papers explorer
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Compact Objects Merging with Stars as an Origin of Ultra-Long Gamma-Ray Bursts and Luminous Fast Blue Optical Transients
SN 2011kl is broadly consistent with an LFBOT light-curve model and ULGRB hosts match LFBOT/LGRB environments, supporting a shared He-CO merger progenitor for a subset of both classes.
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Radio Emission from Fast Blue Optical Transients Powered by Trans-relativistic Shocks in Confined Circumstellar Material
A synchrotron forward-shock model with confined broken-power-law CSM explains FBOT radio diversity via shock transition out of the dense shell, yielding trans-relativistic velocities of 0.1-0.5c and high but brief mass-loss rates of 10^{-4} to 10^{-3} solar masses per year.
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Constraints on Late-Time Flaring from Luminous Fast Blue Optical Transients using the Transiting Exoplanet Survey Satellite and the Zwicky Transient Facility
TESS and ZTF observations of 12 LFBOTs yield no late-time flares after SSO attribution, constraining central engine lifetimes to hundreds of days or less.