The First Limits on the Ultra-high Energy Neutrino Fluence from Gamma-ray Bursts
Vieregg, A. G. · Palladino, K. · Allison, P. · Baughman, B. M. · Beatty, J. J. · Belov, K. · Besson, D. Z. · Bevan, S. · Binns, W. R. · Chen, C. · Chen, P. · Clem, J. M. · Connolly, A. · Detrixhe, M. · De Marco, D. · Dowkontt, P. F. · DuVernois, M. · Gorham, P. W. · Grashorn, E. W. · Hill, B. · Hoover, S. · Huang, M. · Israel, M. H. · Javaid, A. · Liewer, K. M. · Matsuno, S. · Mercurio, B. C. · Miki, C. · Mottram, M. · Nam, J. · Nichol, R. J. · Romero-Wolf, A. · Ruckman, L. · Saltzberg, D. · Seckel, D. · Varner, G. S. · Wang, Y.
Original · EN
We set the first limits on the ultra-high energy (UHE) neutrino fluence at energies greater than 10⁹ GeV from gamma-ray bursts (GRBs) based on data from the second flight of the ANtarctic Impulsive Transient Antenna (ANITA). During the 31 day flight of ANITA-II, 26 GRBs were recorded by Swift or Fermi. Of these, we analyzed the 12 GRBs which occurred during quiet periods when the payload was away from anthropogenic activity. In a blind analysis, we observe 0 events on a total background of 0.0044 events in the combined prompt window for all 12 low-background bursts. We also observe 0 events from the remaining 14 bursts. We place a 90% confidence level limit on the E-4 prompt neutrino fluence of 2.5x10¹7 GeV³/cm² between 10⁸ and 10¹2 GeV from GRB090107A. This is the first reported limit on the UHE neutrino fluence from GRBs above 10⁹ GeV, and the strongest limit above 10⁸ GeV.
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