Built on

IceCube, MAGIC, VERITAS
2016
Earlier work this paper cites.

Similar

IceCube, Fermi-LAT, MAGIC, AGILE, ASAS-SN, HAWC, H.E.S.S., INTEGRAL, Kanata, Kiso, Kapteyn, Liverpool Telescope, Subaru, Swift NuSTAR, VERITAS, VLA/17B-403
2018
Cited alongside, same era.

Then

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2019

The Next Generation of IceCube Realtime Neutrino Alerts

Blaufuss, Erik, Kintscher, Thomas, Lu, Lu et al.

Understand

In 2016, IceCube initiated a system of public real-time alerts that are typically issued within one minute, following the detection of a neutrino candidate event that is likely to be of astrophysical origin.

The goal of these alerts is to enable multi-messenger observations that may identify the neutrino source.
Through January 31, 2019, a total of 20 public alerts have been issued, with many of them receiving follow-up observations across multiple wavelength bands.
One alert in particular, IceCube-170922A, was found to be associated with a flaring gamma-ray blazar, TXS 0506+056.