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A 200-s Quasi-Periodicity Following the Tidal Disruption of a Star by a Dormant Black Hole

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arxiv 1208.1046 v1 pith:3ZEVBA7Z submitted 2012-08-05 astro-ph.CO astro-ph.HEgr-qc

A 200-s Quasi-Periodicity Following the Tidal Disruption of a Star by a Dormant Black Hole

R. C. Reis , J. M. Miller , M. T. Reynolds , K. Gultekin , D. Maitra , A. L. King , T. E. Strohmayer This is my paper
classification astro-ph.CO astro-ph.HEgr-qc
keywords blacksmbhsaccretionactivecentredormantholesinfer
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Supermassive black holes (SMBHs; $M\gtrsim10^5\msun$) are known to exist at the centre of most galaxies with sufficient stellar mass. In the local Universe, it is possible to infer their properties from the surrounding stars or gas. However, at high redshifts we require active, continuous accretion to infer the presence of the SMBHs, often coming in the form of long-term accretion in active galactic nuclei. SMBHs can also capture and tidally disrupt stars orbiting nearby, resulting in bright flares from otherwise quiescent black holes. Here, we report on a $\sim200$-s X-ray quasi-periodicity around a previously dormant SMBH located in the centre of a galaxy at redshift $z=0.3534$. This result may open the possibility of probing general relativity beyond our local Universe.

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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 ...