@article{bf857a22bc874d08b645bc0452cea482,
title = "A loud quasi-periodic oscillation after a star is disrupted by a massive black hole",
abstract = "The tidal forces close to massive black holes can rip apart stars that come too close to them. As the resulting stellar debris spirals toward the black hole, the debris heats up and emits x-rays. We report observations of a stable 131-second x-ray quasi-periodic oscillation from the tidal disruption event ASASSN-14li. Assuming the black hole mass indicated by host galaxy scaling relations, these observations imply that the periodicity originates from close to the event horizon and that the black hole is rapidly spinning. Our findings demonstrate that tidal disruption events can generate quasi-periodic oscillations that encode information about the physical properties of their black holes.",
author = "Pasham, {Dheeraj R.} and Remillard, {Ronald A.} and {Chris Fragile}, P. and Alessia Franchini and Stone, {Nicholas C.} and Giuseppe Lodato and Jeroen Homan and Deepto Chakrabarty and Baganoff, {Frederick K.} and Steiner, {James F.} and Coughlin, {Eric R.} and Pasham, {Nishanth R.}",
note = "Funding Information: D.R.P. thanks D. Huenemoerder, A. Ingram, P. Uttley, and M. Nowak for valuable discussions. This work is based on observations made with the XMM-Newton, Chandra, and Swift observatories : D.R.P., E.R.C., J.F.S., and N.C.S. were supported by NASA through the Einstein Fellowship Program, grants PF6-170156, PF6-170150, PF5-160144, and PF5-160145, respectively. N.C.S. also received financial support from NASA through the Astrophysics Theory Program, grant NNX17AK43G. F.K.B. received financial support from NASA through SAO award SV2-82023, issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. Publisher Copyright: {\textcopyright} 2017 The Authors some rights reserved.",
year = "2019",
month = feb,
day = "1",
doi = "10.1126/science.aar7480",
language = "English (US)",
volume = "363",
pages = "531--534",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6426",
}