IceCube’s first citizen science project a success

Last year, the “Name that Neutrino” project was launched, which called on volunteers from the public to help classify signals from neutrinos—tiny, ghostlike particles—for the IceCube Neutrino Observatory at the South Pole. The project was hosted on Zooniverse, the largest web-based research platform that invites novices and science enthusiasts alike to contribute to ongoing research […]

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IceCube search for low-energy GeV neutrinos from gamma-ray bursts

As one of the most powerful classes of explosions in the universe, gamma-ray bursts (GRBs) have long been considered a possible astrophysical source of neutrinos—tiny “ghostlike” particles that travel through space and large amounts of matter unhindered. These high-energy neutrinos are of particular interest to the IceCube Neutrino Observatory, a gigaton-scale neutrino detector at the […]

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Mining for transient astrophysical neutrino sources using IceCube cascades

Still to this day, the origins of cosmic rays—the astrophysical objects that produce and accelerate cosmic rays—remain to be identified. However, high-energy neutrinos, tiny, nearly massless particles, may be the key to solving this long-standing mystery.  At the South Pole, the IceCube Neutrino Observatory occupies a cubic kilometer of ice in search of high-energy neutrinos […]

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IceCube search for continuous and transient neutrino emission in the direction of real-time alerts

A cubic-kilometer array embedded in ice, the IceCube Neutrino Observatory detects cosmic messengers called neutrinos that can travel through space uninhibited. Of particular interest are high-energy astrophysical neutrinos, which can be traced back to their sources. IceCube issues real-time alerts to the public within minutes of the detection of a neutrino event with a high […]

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IceCube search for neutrino emission from extended sources in the galactic plane

The sources of cosmic rays—extremely energetic particles that rain down on Earth—have been a long-standing mystery in the field of astronomy. Cosmic-ray accelerators in the PeV energy range, known as PeVatrons, produce pions when the cosmic rays interact with their surroundings. These pions then decay into gamma rays and nearly massless particles called neutrinos. These […]

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IceCube search for correlation of high-energy neutrinos with active galactic nuclei and blazars

The IceCube Neutrino Observatory, a cubic-kilometer-sized telescope at the South Pole, has been issuing real-time alerts to the public within minutes of the detection of astrophysical, ghostlike particles called neutrinos. However, the sources of the astrophysical neutrinos detected by IceCube remain largely unknown.  One class of objects that are probable sources of astrophysical neutrinos are […]

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IceCube measurement of atmospheric neutrino mixing using improved DeepCore calibration, data processing

When cosmic rays strike Earth’s atmosphere, they produce air showers containing atmospheric muons and neutrinos—tiny, nearly massless particles—that rain down on Earth. The atmospheric neutrinos are then detected by the IceCube Neutrino Observatory at the South Pole. These atmospheric neutrinos come in three different flavors—electron, muon, and tau–and can become a different flavor or “oscillate” […]

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ICECAT-1, IceCube’s first event catalog of neutrino “track” alerts

Since 2016, the IceCube Neutrino Observatory—a detector buried in a cubic kilometer of Antarctic ice—has been issuing real-time alerts sent to the public within minutes of the detection of astrophysical, ghostlike particles called neutrinos. IceCube’s prompt observations are key in the emerging field of multimessenger astronomy where the combined measurements across the electromagnetic spectrum are […]

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