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Evidence for neutrino emission from the nearby active galaxy NGC 1068

  • Icecube Collaboration
  • Loyola University Chicago
  • German Electron Synchrotron
  • University of Canterbury
  • Université libre de Bruxelles
  • University of Copenhagen
  • Oskar Klein Centre
  • TU Dortmund University
  • University of Geneva
  • Karlsruhe Institute of Technology
  • University of Delaware
  • Marquette University
  • Pennsylvania State University
  • Friedrich-Alexander University Erlangen-Nürnberg
  • Harvard University
  • University of Wisconsin-Madison
  • Massachusetts Institute of Technology
  • South Dakota School of Mines & Technology
  • University of California at Irvine
  • University of California at Berkeley
  • Ohio State University
  • University of Wuppertal
  • Ruhr University Bochum
  • Technical University of Munich
  • University of Rochester
  • University of Maryland, College Park
  • University of Padua
  • University of Kansas
  • Lawrence Berkeley National Laboratory
  • RWTH Aachen University
  • Johannes Gutenberg University Mainz
  • Uppsala University
  • Georgia Institute of Technology

Research output: Contribution to journalArticlepeer-review

520 Scopus citations

Abstract

A supermassive black hole, obscured by cosmic dust, powers the nearby active galaxy NGC 1068. Neutrinos, which rarely interact with matter, could provide information on the galaxy's active core. We searched for neutrino emission from astrophysical objects using data recorded with the IceCube neutrino detector between 2011 and 2020. The positions of 110 known gamma-ray sources were individually searched for neutrino detections above atmospheric and cosmic backgrounds. We found that NGC 1068 has an excess of 79+2220 neutrinos at tera-electron volt energies, with a global significance of 4.2σ, which we interpret as associated with the active galaxy. The flux of high-energy neutrinos that we measured from NGC 1068 is more than an order of magnitude higher than the upper limit on emissions of tera-electron volt gamma rays from this source.

Original languageEnglish
Pages (from-to)538-543
Number of pages6
JournalScience
Volume378
Issue number6619
DOIs
StatePublished - Nov 4 2022

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