First up—last week featured a weather balloon launch. That’s IceCube winterover Marc lending his assistance. He also spent some time helping out with preparations for a repair to one of the power generators. A trip to the South Pole power plant is always an interesting visit. Last week’s activities also included some detector troubleshooting, a […]
Ahh, auroras! We knew they’d come…and now the first of the season have been captured by IceCube’s winterovers. It’s still not completely dark outside, but the skies are still impressive. Above are the first faint auroras seen over the South Pole station, and below seen over the Dark Sector, with the IceCube Lab (ICL) visible […]
Introduction This data release accompanies a report published in The Astrophysical Journal Supplement presenting the first IceCube Event Catalog of Alert Tracks (ICECAT-1), consisting of 275 neutrino events of likely astrophysical origin from 2011 to 2020. For further details of the report, refer to the IceCube publication:“IceCat-1: The IceCube Event Catalog of Alert Tracks,” IceCube […]
Last week at the Pole, they had their Easter dinner—since the kitchen staff doesn’t normally work on Sundays, it was delayed, but only by a day. There was an assortment of colored and decorated eggs as part of the festivities, too (maybe next week they’ll have egg salad?). IceCube’s winterovers were busy with quite an […]
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 […]
It was a quiet week at the Pole, at least for IceCube’s winterovers, with smooth detector operations—no problems or urgent troubleshooting. But there were still the typical activities, like maintenance work, emergency response training, and a cause for celebration (last week it was Easter). It was also quiet outside, with clear skies to enjoy the […]
The sun may be gone, but its light still lingers. At the Pole, sunset doesn’t just “happen”—it takes place slowly through prolonged stages of twilight, after the sun dips below the horizon, in which the light gradually diminishes until darkness reigns. That’s IceCube winterover Marc, above, outside the IceCube Lab as he gets ready to […]
Despite making up roughly 85% of all matter in the universe, dark matter (DM) still remains an enigma to astronomers and physicists. One outstanding question is the microscopic nature of DM, and thus far, no experiment has been able to determine what it is made of. To probe the nature of DM, scientists look for […]
Gravitational waves (GWs) are produced by some of the most extreme astrophysical phenomena, such as black hole and neutron star mergers. They have long been suspected as astrophysical sources of neutrinos, ghostlike cosmic messengers hurtling through space unimpeded. Thus far, common astrophysical sources of neutrinos and photons, as well as common sources of gravitational waves […]
When a star reaches the end of its thermonuclear evolution, it explodes, giving rise to neutron stars and black holes. Called core-collapse supernovae (CCSNe), these explosions are triggered by the implosion of the dying star’s core. The ejecta from the CCSN can then interact with the dense circumstellar medium where charged particles can be accelerated. […]