J. C. Díaz–Vélez
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View article: All-sky Neutrino Point-source Search with IceCube Combined Track and Cascade Data
All-sky Neutrino Point-source Search with IceCube Combined Track and Cascade Data Open
Despite extensive efforts, discovery of high-energy astrophysical neutrino sources remains elusive. We present an event-level simultaneous maximum likelihood analysis of tracks and cascades using IceCube data collected from 2008 April 6 to…
View article: Seasonal variations of the atmospheric muon neutrino spectrum measured with IceCube
Seasonal variations of the atmospheric muon neutrino spectrum measured with IceCube Open
This study presents an analysis of seasonal variations in the atmospheric muon neutrino flux, using 11.3 years of data from the IceCube Neutrino Observatory. By leveraging a novel spectral unfolding method, we explore the energy range from…
View article: Longtime Monitoring of TeV Radio Galaxies with HAWC
Longtime Monitoring of TeV Radio Galaxies with HAWC Open
We present the monitoring of the TeV-emitting radio galaxies M87, NGC 1275, 3C 264, and IC 310 with the High-Altitude Water Cherenkov Observatory (HAWC) over a period of approximately 7.5 yr. The analysis includes light curves at daily, we…
View article: Study of the IC 443 Region with the HAWC Observatory
Study of the IC 443 Region with the HAWC Observatory Open
Supernova remnants are one potential source class considered a PeVatron (i.e., capable of accelerating cosmic rays above PeV energies). The shock fronts produced after the explosion of the supernova are ideal regions for particle accelerat…
View article: Improvements in the Reconstruction of IceCube Realtime Alerts
Improvements in the Reconstruction of IceCube Realtime Alerts Open
In 2016, the IceCube Neutrino Observatory launched its realtime program. When a neutrino candidate of likely astrophysical origin is detected, a public alert is issued, typically within one minute. These alerts allow the astrophysical comm…
View article: Measurement of All Flavor PeV Neutrino Flux using Combined Datasets from IceCube
Measurement of All Flavor PeV Neutrino Flux using Combined Datasets from IceCube Open
The IceCube Neutrino Observatory has detected astrophysical neutrinos with energies ranging from a few TeV to multiple PeV. To extend the energy range beyond 10 PeV, we combine throughgoing tracks from the northern sky, high-energy startin…
View article: Advances in reconstructing the cosmic-ray energy spectrum with IceTop
Advances in reconstructing the cosmic-ray energy spectrum with IceTop Open
The IceTop array at the surface of the IceCube Neutrino Observatory measures extensive air showers produced by cosmic-ray particles with energies from PeV up to EeV, covering the transition region from galactic to extragalactic sources. Th…
View article: Measurement of the Three-Flavor Composition of Astrophysical Neutrinos with Contained IceCube Events
Measurement of the Three-Flavor Composition of Astrophysical Neutrinos with Contained IceCube Events Open
The IceCube Neutrino Observatory at the South Pole detects neutrinos from the entire sky, both of astrophysical and atmospheric origin, via the Cherenkov light emitted when these neutrinos interact in the ice, giving rise to rapidly moving…
View article: Advancements in the IceAct Energy Spectrum Analysis
Advancements in the IceAct Energy Spectrum Analysis Open
The IceAct telescopes are Imaging Air Cherenkov telescopes installed as part of the IceCube Neutrino Observatory at the geographic South Pole. They consist of a 61 pixel camera and are small and robust to withstand the harsh environmental …
View article: Commissioning and Testing of IceAct Telescopes at the IceCube Neutrino Observatory
Commissioning and Testing of IceAct Telescopes at the IceCube Neutrino Observatory Open
IceAct is an array of imaging air Cherenkov telescopes located at the ice surface above the IceCube Neutrino Observatory. Each telescope features a silicon photomultiplier-based 61-pixel camera and a Fresnel-lens as imaging optic, resultin…
View article: Search for Sub-Relativistic Magnetic Monopoles with the IceCube Neutrino Observatory
Search for Sub-Relativistic Magnetic Monopoles with the IceCube Neutrino Observatory Open
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-relati…
View article: Impact of Hole-ice Calibration on High Energy Event Reconstruction with the IceCube Upgrade
Impact of Hole-ice Calibration on High Energy Event Reconstruction with the IceCube Upgrade Open
The IceCube Upgrade, currently under construction at the geographic South Pole, is the next development stage of the IceCube detector. It will consist of seven new columns of novel optical sensors and advanced calibration devices densely d…
View article: Combining IceCube Muon Tracks and Cascades to measure the Galactic Diffuse Neutrino Flux
Combining IceCube Muon Tracks and Cascades to measure the Galactic Diffuse Neutrino Flux Open
The diffuse Galactic neutrino flux is produced by cosmic rays interacting with the interstellar medium. The measurement of this flux can help to understand the distribution of cosmic rays in the Galaxy. The first observation of this neutri…
View article: Performance Study of the IceCube Upgrade Camera System
Performance Study of the IceCube Upgrade Camera System Open
The IceCube Upgrade Camera System is a novel calibration system designed to calibrate the IceCube detector by measuring the optical properties of the Antarctic ice. The system comprises nearly 2,000 cameras and illumination LEDs, which are…
View article: The IceCube-Gen2 project
The IceCube-Gen2 project Open
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:…
View article: Very Late Afterpulses and Search for the Neutron Echo in IceCube
Very Late Afterpulses and Search for the Neutron Echo in IceCube Open
While high-energy astrophysical neutrinos are well-established, their flavor composition remains relatively unconstrained. In IceCube, long muon tracks from $\nu_{\mu}$ CC interactions are easily identified but the detector geometry does n…
View article: Classification of high energy muon bundles and single muons from the southern sky in IceCube
Classification of high energy muon bundles and single muons from the southern sky in IceCube Open
The IceCube Neutrino Observatory, located at the geographic South Pole, uses the glacial ice volume to detect astrophysical neutrinos. Detection of the neutrinos from the northern sky provides the opportunity to use a large effective volum…
View article: All-flavor Time-dependent Search for Transient Neutrino Sources
All-flavor Time-dependent Search for Transient Neutrino Sources Open
Transient sources are among the preferred candidates for the sources of high-energy neutrino emission. Intriguing examples so far include blazar flares and tidal disruption events coincident with IceCube neutrinos. Here, we report the firs…
View article: Measuring the galactic plane and searching for galactic PeVatrons using the IceCube Multi-Flavor Astrophysical Neutrino sample
Measuring the galactic plane and searching for galactic PeVatrons using the IceCube Multi-Flavor Astrophysical Neutrino sample Open
The IceCube Neutrino Observatory has provided new insights into the high-energy universe, in particular, unveiling neutrinos from the galactic plane. However, galactic neutrino sources are still unresolved. The recent detection of multi-Pe…
View article: Enhancing searches for astrophysical neutrino sources in IceCube with machine learning and improved spatial modeling
Enhancing searches for astrophysical neutrino sources in IceCube with machine learning and improved spatial modeling Open
Searches for astrophysical neutrino sources in IceCube rely on an unbinned likelihood that consists of an energy and spatial component. Accurate modeling of the detector, ice, and spatial distributions leads to improved directional and ene…
View article: Neutrino flavor composition using High Energy Starting Events with IceCube
Neutrino flavor composition using High Energy Starting Events with IceCube Open
Astrophysical neutrinos provide crucial insights into their sources and play a key role in multi- messenger astronomy. The neutrino flavor composition at Earth allows us to probe the mechanisms of neutrino production and cosmic ray acceler…
View article: Results from IceCube Searches for High-Energy Neutrinos Coincident with Gravitational-Wave Alerts in LVK O4
Results from IceCube Searches for High-Energy Neutrinos Coincident with Gravitational-Wave Alerts in LVK O4 Open
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 gravitation…
View article: Dark matter searches in the Galactic Center with IceCube-DeepCore and IceCube-Upgrade
Dark matter searches in the Galactic Center with IceCube-DeepCore and IceCube-Upgrade Open
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 hea…
View article: Spectrum of PeV Cosmic-Ray Protons and Helium Nuclei with IceCube
Spectrum of PeV Cosmic-Ray Protons and Helium Nuclei with IceCube Open
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 wi…
View article: Limits on WIMP-Scattering Cross Sections using Solar Neutrinos with Ten Years of IceCube Data
Limits on WIMP-Scattering Cross Sections using Solar Neutrinos with Ten Years of IceCube Data Open
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). Ge…
View article: Sustainability and Environmental Impact of IceCube-Gen2
Sustainability and Environmental Impact of IceCube-Gen2 Open
IceCube-Gen2 is a proposed next-generation neutrino facility at the South Pole, designed to expand upon the achievements of the pioneering IceCube observatory. This contribution provides a comprehensive review of efforts to ensure the sust…
View article: State of the Ice Model in IceCube observatory
State of the Ice Model in IceCube observatory Open
IceCube is a neutrino observatory located at the South Pole that uses Antarctic ice as a medium for detection of Cherenkov photons. As such, analysis of the data relies on our understanding of the properties of ice within and around the in…
View article: IceCube searches for GeV neutrino counterparts associated with high-energy starting events
IceCube searches for GeV neutrino counterparts associated with high-energy starting events Open
The origin of the astrophysical neutrino flux observed by IceCube is largely unknown. To help decipher its astrophysical origin, we propose an IceCube analysis that conducts follow-up searches for GeV neutrinos associated with neutrino eve…
View article: Search for GeV-PeV neutrinos from nova T Coronae Borealis with IceCube
Search for GeV-PeV neutrinos from nova T Coronae Borealis with IceCube Open
The widely anticipated outburst of recurrent nova T Coronae Borealis (T CrB), which is near the end of its 80-year cycle, provides an excellent opportunity to search for neutrinos from novae. Novae are an energetic class of transients, whi…
View article: Improved Gamma-Hadron Separation for PeV Photon Searches with IceCube
Improved Gamma-Hadron Separation for PeV Photon Searches with IceCube Open
IceTop, the km$^2$ surface array of the IceCube Neutrino Observatory at the South Pole, is sensitive to air showers of all primary particles, including gamma rays. In particular, in the PeV energy range, the combination of IceTop and IceCu…