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Physics Seminar: A Search for Muon Neutrinos Coincident with Northern Gamma-Ray Bursts Using IceCube
Start Date: 1/28/2015Start Time: 2:30 PM
End Date: 1/28/2015End Time: 3:30 PM

Event Description
Michael Richman, PhD, University of Maryland

 

We present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino was found in coincidence with one of the 506 observed bursts, consistent with the expectation from atmospheric backgrounds. Although GRBs have been proposed as candidate sources for ultra-high energy cosmic rays, our limits on the neutrino flux disfavor much of the parameter space for the latest models. We also find that no more than ~1% of the recently observed astrophysical neutrino flux consists of prompt emission from GRBs that are potentially observable by existing satellites. These results currently represent world-leading constraints on a prompt neutrino fluence from GRBs.
Contact Information:
Name: Prof. Naoko Kurahashi Neilson
Email: naoko@drexel.edu
Location:
Disque Hall 614, 4131 Chestnut Street, Philadelphia, PA 19104
Audience:
  • Undergraduate Students
  • Graduate Students
  • Faculty
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