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

June 2022 • 2022PhRvL.128v1101R

Authors • 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

Abstract • 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.

Links

• PREPRINT http://arxiv.org/abs/2111.09390
• DATA https://irsa.ipac.caltech.edu/bibdata/2022/R/2022PhRvL.128v1101R.html
• ELECTR https://doi.org/10.1103%2FPhysRevLett.128.221101