Lab Home | Phone | Search
	Center for Nonlinear Studies
	Home  ▶ People   Current   Executive Committee   Postdocs   Visitors   Students   Research   Publications  ▶ Conferences   Workshops   Sponsorship  ▶ Talks   Seminars   Postdoc Seminars Archive   Quantum Lunch   Quantum Lunch Archive   P/T Colloquia   Archive   Ulam Scholar     Postdoc Nominations  ▶ Student Requests   Student Program  ▶ Visitor Requests   Description   Past Visitors  ▶ Services   General     History of CNLS     Maps, Directions   CNLS Office   T-Division   LANL				Thursday, January 10, 20191:00 PM - 2:00 PMCNLS Conference Room (TA-3, Bldg 1690) Seminar Neutrino emission from the blazar TXS 0506+056 Joshua WoodUniversity of Wisconsin - Madison A high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this association, we investigated 9.5 years of IceCube neutrino observations to search for excess emission at the position of the blazar. Allowing for time-variable flux, we find an excess of high-energy neutrino events with respect to atmospheric backgrounds at that position between September 2014 and March 2015. This suggests that blazars are the first identifiable sources of the high-energy astrophysical neutrino flux. Host: Pat Harding