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Reusch, Simeon; Stein, Robert; Kowalski, Marek; van Velzen, Sjoert; Franckowiak, Anna; Lunardini, Cecilia; Murase, Kohta; Winter, Walter; Miller-Jones, James C. A.; Kasliwal, Mansi M.; Gilfanov, Marat; Garrappa, Simone; Paliya, Vaidehi S.; Ahumada, Tomás; Anand, Shreya; Barbarino, Cristina; Bellm, Eric C.; Brinnel, Valéry; Buson, Sara; Cenko, S. Bradley; 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; Strotjohann, Nora Linn; Sunyaev, Rashid; van Santen, Jakob; Walters, Richard; Zhang, B. Theodore; Zimmerman, Erez
Physical review letters, 06/2022, Letnik: 128, Številka: 22Journal 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.
