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arxiv: 2111.09390 · v2 · pith:HCMHPNUKnew · submitted 2021-11-17 · 🌌 astro-ph.HE

Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino

Simeon Reusch , Robert Stein , Marek Kowalski , Sjoert van Velzen , Anna Franckowiak , Cecilia Lunardini , Kohta Murase , Walter Winter
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James C. A. Miller-Jones Mansi M. Kasliwal Marat Gilfanov Simone Garrappa Vaidehi S. Paliya Tomas Ahumada Shreya Anand Cristina Barbarino Eric C. Bellm Valery 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 Erez Zimmerman
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keywords neutrinohigh-energyat2019fdrbrightcandidatecoincidentdisruptionevent
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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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