Maximilian Meier

The IceCube-Gen2 project

M. Kowalski, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

Since its completion in 2011, the IceCube Neutrino Observatory has opened a new window on the extreme Universe. Building on its success in multi-messenger astronomy and particle physics, the collaboration is now pursuing a major extension: the IceCube-Gen2 facility. IceCube-Gen2 will be …

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Spectrum of PeV Cosmic-Ray Protons and Helium Nuclei with IceCube

Julian Saffer, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

The IceCube Observatory comprises a cubic-kilometer particle detector deep in the Antarctic ice and the cosmic-ray air-shower array IceTop at the surface above. Previous analyses of the cosmic-ray composition have used coincident events with IceTop detecting the electromagnetic shower footprint as well …

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Limits on WIMP-Scattering Cross Sections using Solar Neutrinos with Ten Years of IceCube Data

Jeffrey Lazar, M. Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

Although dark matter (DM) comprises 84% of the matter content of the Universe, its nature remains unknown. One broad class of particle DM motivated by extensions of the Standard Model (SM)is weakly interacting massive particles (WIMPs). Generically, WIMPs will scatter off nuclei …

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Time Variation in the TeV Cosmic Ray Anisotropy with IceCube and Energy Dependence of the Solar Dipole

Perri Zilberman, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

There is an observed anisotropy in the arrival direction distribution of cosmic rays in the TeV-PeV regime with variations on the scale of one part in a thousand. While the origin of this anisotropy is an open question, a possible factor is …

Search for High-Energy Neutrinos from Infrared Flares

Teresa Pernice, Giacomo Sommani, Rasha Abbasi, Markus Ackermann et autres

IceCube has detected a diffuse flux of high-energy neutrinos, whose origin still remains uncertain. Accreting supermassive black holes (SMBHs) have been proposed as plausible sources of neutrinos. Candidate sources include AT2019dsg, which is likely a stellar tidal disruption event (TDE), and AT2019dfr, …

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Prospects for GeV Neutrino Transient Searches with the IceCube Upgrade

Yukiho Kobayashi, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

The recent detection of TeV neutrino sources by the IceCube Neutrino Observatory demonstrates the detector's advanced capabilities in detecting high-energy astrophysical neutrinos. At lower energies, down to the GeV range, a variety of transient phenomena, such as novae, supernovae, and gamma-ray bursts, …

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Search for Sub-Relativistic Magnetic Monopoles with the IceCube Neutrino Observatory

Jonas Häußler, Rasha Abbasi, M. Ackermann, Jenni Adams et autres

Magnetic monopoles are beyond standard model particles, predicted by Grand Unified Theories (GUTs) to be created during the early universe. At typical masses of the GUT-scale - above $10^{14}$ GeV - these particles would move at sub-relativistic speeds. The Rubakov-Callan effect predicts …

Dark matter searches in the Galactic Center with IceCube-DeepCore and IceCube-Upgrade

Juanan Aguilar, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

The nature of Dark Matter is one of the important unresolved questions in fundamental physics. It is assumed in many Beyond Standard Model theories that dark matter candidates can have weak coupling to Standard Model (SM) particles. In heavy cosmological objects, like …

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Muon number reconstruction with IceTop using a two-component lateral distribution function

Mark Weyrauch, Rasha Abbasi, Markus Ackermann, Jenni Adams et autres

The IceCube Neutrino Observatory, situated at the geographic South Pole, comprises both a surface component, IceTop, and a deep in-ice component. This unique setup allows for simultaneous measurements of low-energy ($\sim \rm{GeV}$) and high-energy ($\gtrsim 400\,\rm{GeV}$) muons generated in cosmic-ray air showers. …

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Results from IceCube Searches for High-Energy Neutrinos Coincident with Gravitational-Wave Alerts in LVK O4

Z. Márka, Jessie Thwaites, Justin Vandenbroucke, Doğa Veske et autres

Mergers of compact objects, binary black holes and mergers including at least one neutron star, are a predicted source of high-energy neutrinos. These astrophysical events are now routinely detected through observation of their gravitational wave signature and, at least in one instance, …

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Measuring the Neutrino Flux in Segments along the Galactic Plane with IceCube

Ludwig Neste, Mirco Hünnefeld, C. Finley, Markus Ackermann et autres

Gamma-ray emission from the plane of the Milky Way is understood as partly originating from the interaction of cosmic rays with the interstellar medium. The same interaction is expected to produce a corresponding flux of neutrinos. In 2023, IceCube reported the first …

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Using End-to-End Optimized Summary Statistics to Improve IceCube's Diffuse Galactic Fits

Oliver Janik, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla et autres

Characterizing the astrophysical neutrino flux with the IceCube Neutrino Observatory traditionally relies on a binned forward-folding likelihood approach. Insufficient Monte Carlo (MC) statistics in each bin limits the granularity and dimensionality of the binning scheme. A neural network can be employed to …

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