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  • Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino
    Reusch, Simeon; Stein, Robert; Kowalski, Marek; Sjoert van Velzen; Franckowiak, Anna; Lunardini, Cecilia; Murase, Kohta; Winter, Walter; Miller-Jones, James C A; Kasliwal, Mansi M; Gilfanov, Marat; Garrappa, Simone; Paliya, Vaidehi S; Ahumada, Tomas; Anand, Shreya; Barbarino, Cristina; Bellm, Eric C; Brinnel, Valery; Buson, Sara; S Bradley Cenko; Coughlin, Michael W; De, Kishalay; Dekany, Richard; Frederick, Sara; Gal-Yam, Avishay; Gezari, Suvi; Giroletti, Marcello; Graham, Matthew J; Karambelkar, Viraj; Kimura, Shigeo S; Kong, Albert K H; Kool, Erik C; Laher, Russ R; Medvedev, Pavel; Necker, Jannis; Nordin, Jakob; Perley, Daniel A; Rigault, Mickael; Rusholme, Ben; Schulze, Steve; Schweyer, Tassilo; Singer, Leo P; Sollerman, Jesper; Nora Linn Strotjohann; Sunyaev, Rashid; Jakob van Santen; Walters, Richard; Zhang, B Theodore; Zimmerman, Erez

    arXiv.org, 06/2022
    Paper, Journal Article

    The 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.

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