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A radio jet from the optical and x-ray bright stellar tidal disruption flare ASASSN-14li

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arxiv 1511.08803 v2 pith:PVQ6FYYU submitted 2015-11-27 astro-ph.HE astro-ph.GA

A radio jet from the optical and x-ray bright stellar tidal disruption flare ASASSN-14li

Sjoert van Velzen , Gemma E. Anderson , Nicholas C. Stone , Morgan Fraser , Thomas Wevers , Brian D. Metzger , Peter G. Jonker , Alexander J. van der Horst
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Tim D. Staley Alexander J. Mendez James C.A. Miller-Jones Simon T. Hodgkin Heather C. Campbell Rob P. Fender
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keywords radiodetectiondisruptionstellarthermaltidalblackflare
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The tidal disruption of a star by a supermassive black hole leads to a short-lived thermal flare. Despite extensive searches, radio follow-up observations of known thermal stellar tidal disruption flares (TDFs) have not yet produced a conclusive detection. We present a detection of variable radio emission from a thermal TDF, which we interpret as originating from a newly-launched jet. The multi-wavelength properties of the source present a natural analogy with accretion state changes of stellar mass black holes, suggesting all TDFs could be accompanied by a jet. In the rest frame of the TDF, our radio observations are an order of magnitude more sensitive than nearly all previous upper limits, explaining how these jets, if common, could thus far have escaped detection.

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Cited by 1 Pith paper

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  1. Tidal Disruption Events with the SKA

    astro-ph.HE 2026-07 unverdicted novelty 4.0

    With its projected sensitivity, low-frequency coverage, and VLBI, the SKA would shift tidal disruption event radio studies from a handful of events to hundreds, enabling population-level inference on jets, black-hole ...