Neutrino astronomy had a pivotal moment in 2013 when the IceCube Collaboration announced that their South Pole neutrino telescope had detected the first evidence of an astrophysical neutrino flux. This was confirmed in 2015 with an independent search in the Northern Hemisphere, also by IceCube. Since then, IceCube and other experiments have learned more about […]
In 2013, the IceCube Neutrino Observatory detected very high energy particles called neutrinos that arrived at Earth from outer space. Not only did IceCube confirm the existence of astrophysical neutrinos, but they also proved that these elusive particles could be detected by their cubic-kilometer-sized telescope buried in the South Pole ice. Even though IceCube had […]
By Madeleine O’Keefe and Pablo Correa In the constellation Ursa Major, there is a galaxy with the uncanny appearance of a particular dental hygiene tool. Aptly nicknamed the “Toothbrush” galaxy, Mrk 273 is actually a merger of two galaxies and an example of an ultraluminous infrared galaxy (ULIRG). It might be a source of astrophysical […]
Many people think of our sun as being bright. It is an enormous ball of glowing gas that illuminates our days and provides Earth with heat and light. But it is also being explored for signals of something darker: dark matter. Dark matter is not literally dark; it is invisible because it does not interact […]
The IceCube Neutrino Observatory, a peculiar telescope located in the ice of the South Pole, was built to detect mysterious particles called neutrinos that come from outer space. To pinpoint their cosmic sources, IceCube researchers look for unexpected excesses of neutrinos coming from localized directions in the sky. In a paper published in 2020, IceCube […]
For decades, physicists have theorized that the current best theory describing particle physics—the “Standard Model”—was not sufficient to explain the way the universe works. In the search for physics beyond the Standard Model (BSM), elusive particles called neutrinos might point the way. Neutrinos are sometimes called “ghost particles” because they so rarely interact with matter […]
The IceCube Collaboration has teamed up with NASA’s High-Energy Astrophysics Science Archive Research Center (HEASARC) to share 10 years of IceCube data with the public. Supported by the Astrophysics Division of NASA’s Science Mission Directorate and a service of the Astrophysics Science Division at NASA’s Goddard Space Flight Center (GSFC), the HEASARC is the primary […]
Machine learning has arrived at the South Pole. Well, not literally, but machine learning is now being applied to data collected at the South Pole by the IceCube Neutrino Observatory, an unconventional telescope made up of thousands of sensors buried in ice. IceCube’s goal is to detect tiny, nearly massless particles called neutrinos that fly […]
Ever since the first detection of gravitational waves by LIGO and Virgo, the IceCube Neutrino Observatory has been searching for neutrino counterparts to gravitational waves. Detecting both gravitational waves and neutrinos from the same source would be a groundbreaking step in multimessenger astronomy, the field that uses multiple kinds of cosmic messengers to see the […]
Our sun shines not only in light but also in neutrinos. These tiny, chargeless, and nearly massless particles are produced deep in the sun’s core, but we also expect them to be created in the solar atmosphere, either by collisions of cosmic rays or during solar flares. The IceCube Neutrino Observatory at the South Pole, a […]