Multimessenger Observations of Neutrinos from the Direction of Blazar TXS 0506+056

High-energy neutrinos are thought to be produced in the most powerful accelerators in the Universe such as pulsars, active galactic nuclei and blazars. The IceCube Neutrino Observatory along with multiple photon observatories have produced compelling evidence that the blazar TXS 0506+056 is a source of High Energy Neutrinos. Observations from IceCube and the Fermi-LAT (Large Area Telescope) have found a temporal and spatial correlation between a flaring blazar and a neutrino, IceCube-170922A, with a significance of 3 $\sigma$. This sparked a follow up study to look through 9.5 years of archival data from IceCube. An excess of neutrinos was found coming from the direction of TXS 0506+056 above atmospheric background between September 2014 and March 2015 with 3.5 $\sigma$ significance. These two pieces of evidence, a neutrino coincident with a flaring blazar and a spatial excess, suggests that blazars are a possible source of high energy neutrinos.