Reusch, SimeonStein, RobertKowalski, MarekVelzen, Sjoert vanSinger, Leoet al2023-03-032023-03-032022-03-06Reusch, Simeon, et al. "Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino" Phys. Rev. Lett. 128, no. 221101 (03 June, 2022). https://doi.org/10.1103/PhysRevLett.128.221101.https://doi.org/10.1103/PhysRevLett.128.221101http://hdl.handle.net/11603/26944Authors:- Simeon Reusch , Robert Stein , Marek Kowalski , Sjoert van Velzen , Anna Franckowiak , Cecilia Lunardini , Kohta Murase , Walter Winter , James C. A. Miller-Jones , Mansi M. Kasliwal , Marat Gilfanov , Simone Garrappa , Vaidehi S. Paliya , Tomás Ahumada , Shreya Anand , Cristina Barbarino, Eric C. Bellm , Val´ery Brinnel, Sara Buson , S. Bradley Cenko , Michael W. Coughlin , Kishalay De , Richard Dekany , Sara Frederick , Avishay Gal-Yam , Suvi Gezari , Marcello Giroletti , Matthew J. Graham , Viraj Karambelkar , Shigeo S. Kimura , Albert K. H. Kong , Erik C. Kool , Russ R. Laher , Pavel Medvedev , Jannis Necker , Jakob Nordin , Daniel A. Perley , Mickael Rigault , Ben Rusholme , Steve Schulze , Tassilo Schweyer , Leo P. Singer , Jesper Sollerman , Nora Linn Strotjohann , Rashid Sunyaev , Jakob van Santen , Richard Walters, B. Theodore Zhang , and Erez ZimmermanThe origins of the high-energy cosmic neutrino flux remain largely unknown. Recently, one high-energy neutrino was associated with a tidal disruption event (TDE). Here we present AT2019fdr, an exceptionally luminous TDE candidate, coincident with another high-energy neutrino. Our observations, including a bright dust echo and soft late-time x-ray emission, further support a TDE origin of this flare. The probability of finding two such bright events by chance is just 0.034%. We evaluate several models for neutrino production and show that AT2019fdr is capable of producing the observed high-energy neutrino, reinforcing the case for TDEs as neutrino sources.10 pagesen-US© 2022 American Physical SocietyText