Publications (116)
High Energy Neutrinos from Recent Blazar Flares
Francis Halzen, Ali Kheirandish
The energy density of cosmic neutrinos measured by IceCube matches the one observed by Fermi in extragalactic photons that predominantly originate in blazars. This has inspired att…
Evaluating the Contribution of Active Galactic Nuclei to the Diffuse High-Energy Neutrino Flux
Samyak Jain, Dan Hooper, Francis Halzen
The detection of high-energy neutrinos from NGC 1068 and TXS-0506+56 suggests that active galactic nuclei (AGN) may contribute significantly to the the diffuse neutrino flux measur…
Prospects For Detecting Dark Matter With Neutrino Telescopes In Light Of Recent Results From Direct Detection Experiments
Francis Halzen, Dan Hooper
Direct detection dark matter experiments, lead by the CDMS collaboration, have placed increasingly stronger constraints on the cross sections for elastic scattering of WIMPs on nuc…
IceCube: An Instrument for Neutrino Astronomy
Francis Halzen, Spencer R. Klein
Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer-scale neutrino detectors were required. The first such instrume…
IceCube: Neutrinos Associated with Cosmic Rays
Francis Halzen
After a brief review of the status of the kilometer-scale neutrino observatory IceCube, we discuss the prospect that such detectors discover the still-enigmatic sources of cosmic r…
Cosmic Neutrinos and the Energy Budget of Galactic and Extragalactic Cosmic Rays
Francis Halzen
Although kilometer-scale neutrino detectors such as IceCube are discovery instruments, their conceptual design is very much anchored to the observational fact that Nature produces…