The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

The nuclei of most normal galaxies contain supermassive black holes, which can accrete
gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that …

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 …

INTRODUCTION Neutrinos are tracers of cosmic-ray acceleration: electrically neutral and
traveling at nearly the speed of light, they can escape the densest environments and may be …

This Letter presents the results from pointlike neutrino source searches using ten years of
IceCube data collected between April 6, 2008 and July 10, 2018. We evaluate the …

Cosmic neutrinos provide a unique window into the otherwise hidden mechanism of particle
acceleration in astrophysical objects. The IceCube Collaboration recently reported the likely …

Astrophysical neutrinos are excellent probes of astroparticle physics and high-energy
physics. With energies far beyond solar, supernovae, atmospheric, and accelerator …

Thanks to its broad energy range, excellent sensitivity, and all-sky monitoring capabilities,
the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) has revolutionized our …

Abstract The Fermi Large Area Telescope (LAT) lightcurve repository (LCR) is a publicly
available, continually updated library of gamma-ray lightcurves of variable Fermi-LAT …

A neutrino with energy∼ 290 TeV, IceCube-170922A, was detected in coincidence with the
BL Lac object TXS 0506+ 056 during enhanced gamma-ray activity, with chance …