High-energy Neutrino Flares from X-Ray Bright and Dark Tidal Disruption Events

Nicholas Senno, Kohta Murase, Peter Mészáros

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

X-ray and γ-ray observations by the Swift satellite revealed that a fraction of tidal disruption events (TDEs) have relativistic jets. Jetted TDEs have been considered to be potential sources of very-high-energy cosmic-rays and neutrinos. In this work, using semi-analytical methods, we calculate neutrino spectra of X-ray bright TDEs with powerful jets and dark TDEs with possible choked jets, respectively. We estimate their neutrino fluxes and find that non-detection would give us an upper limit on the baryon loading of the jet luminosity contained in cosmic-rays ξcr ≲ 20-50 for Sw J1644+57. We show that X-ray bright TDEs make a sub-dominant (≲5%-10%) contribution to IceCube's diffuse neutrino flux, and study possible contributions of X-ray dark TDEs given that particles are accelerated in choked jets or disk winds. We discuss future prospects for multi-messenger searches of the brightest TDEs.

Original languageEnglish (US)
Article number3
JournalAstrophysical Journal
Volume838
Issue number1
DOIs
StatePublished - Mar 20 2017

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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