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A Remarkably Loud Quasi-Periodicity after a Star is Disrupted by a Massive Black Hole

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arxiv 1810.10713 v1 pith:3YTTCZC3 submitted 2018-10-25 astro-ph.HE

A Remarkably Loud Quasi-Periodicity after a Star is Disrupted by a Massive Black Hole

Dheeraj R. Pasham (MIT) , Ronald A. Remillard , P. Chris Fragile , Alessia Franchini , Nicholas C. Stone , Giuseppe Lodato , Jeroen Homan , Deepto Chakrabarty
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Frederick K. Baganoff James F. Steiner Eric R. Coughlin Nishanth R. Pasham
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keywords blackholeclosedisruptedholesmassivequasi-periodicitystar
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The immense tidal forces of massive black holes can rip apart stars that come too close to them. As the resulting stellar debris spirals inwards, it heats up and emits x-rays when near the black hole. Here, we report the discovery of an exceptionally stable 131-second x-ray quasi-periodicity from a black hole after it disrupted a star. Using a black hole mass indicated from host galaxy scaling relations implies that, (1) this periodicity originates from very close to the black hole's event horizon, and (2) the black hole is rapidly spinning. Our findings suggest that other disruption events with similar highly sensitive observations likely also exhibit quasi-periodicities that encode information about the fundamental properties of their black holes.

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Cited by 3 Pith papers

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  3. Tidal Disruption Events with the SKA

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