A5082153691- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Particle accelerators and beam dynamics
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Distributed and Parallel Computing Systems
- Pulsars and Gravitational Waves Research
- Black Holes and Theoretical Physics
- Tropical and Extratropical Cyclones Research
- Gyrotron and Vacuum Electronics Research
Peking University
2024-2025
RWTH Aachen University
2023-2025
University of Antwerp
2024
A. Alikhanyan National Laboratory
2024
Providence College
2024
Lawrence Berkeley National Laboratory
2024
Southern University and Agricultural and Mechanical College
2024
The University of Texas at Arlington
2024
Clark Atlanta University
2024
University of Alaska Anchorage
2024
We describe a new data sample of IceCube DeepCore and report on the latest measurement atmospheric neutrino oscillations obtained with recorded between 2011--2019. The includes significant improvements in calibration, detector simulation, processing, analysis benefits from sophisticated treatment systematic uncertainties, significantly greater level detail since our last study. By measuring relative fluxes flavors as function their reconstructed energies arrival directions we constrain...
We present a catalog of likely astrophysical neutrino track-like events from the IceCube Neutrino Observatory. began reporting neutrinos in 2016 and this system was updated 2019. The presented here includes that were reported real-time since 2019, as well identified archival data samples starting 2011. report 275 two selection channels first entries catalog, Event Catalog Alert Tracks, which will see ongoing extensions with additional alerts. gold bronze alert respectively provide candidates...
The DeepCore subdetector of the IceCube Neutrino Observatory provides access to neutrinos with energies above approximately 5 GeV. Data taken between 2012 and 2021 (3387 days) are utilized for an atmospheric <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msub><a:mi>ν</a:mi><a:mi>μ</a:mi></a:msub></a:math> disappearance analysis that studied 150 257 neutrino-candidate events reconstructed 100 An advanced reconstruction based on a convolutional neural network is...
We present a search for an eV-scale sterile neutrino using 7.5 years of data from the IceCube DeepCore detector. The analysis uses sample 21,914 events with energies between 5 and 150 GeV to neutrinos through atmospheric muon disappearance. Improvements in event selection treatment systematic uncertainties provide greater statistical power compared previous searches. Our results are compatible absence mixing active states, we place constraints on matrix elements <a:math...
We report a search for high-energy astrophysical neutrino multiplets, detections of multiple clusters in the same direction within 30 days, based on an analysis 11.4 years IceCube data. A new method optimized transient emission with monthly time scale is employed, providing higher sensitivity to fluxes. This result sensitive emission, reaching per-flavor flux approximately $10^{-10}\ {\rm erg}\ cm}^{-2}\ sec}^{-1}$ from Northern sky energy range $E\gtrsim 50$~TeV. The number doublets and...
In the IceCube Neutrino Observatory, a signal of astrophysical neutrinos is obscured by backgrounds from atmospheric and muons produced in cosmic-ray interactions. event selections used to isolate neutrino often focus on t/he morphology light patterns recorded detector. The analyses presented here use new Enhanced Starting Track Event Selection (ESTES), which identifies events likely generated muon interactions within detector geometry, focusing energies 1-500 TeV with median angular...
We describe a new data sample of IceCube DeepCore and report on the latest measurement atmospheric neutrino oscillations obtained with recorded between 2011-2019. The includes significant improvements in calibration, detector simulation, processing, analysis benefits from detailed treatment systematic uncertainties, significantly higher level detail since our last study. By measuring relative fluxes flavors as function their reconstructed energies arrival directions we constrain mixing...
This Letter presents the result of a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>3</a:mn><a:mo>+</a:mo><a:mn>1</a:mn></a:mrow></a:math> sterile neutrino search using 10.7 yr IceCube data. We analyze atmospheric muon neutrinos that traverse Earth with energies ranging from 0.5 to 100 TeV, incorporating significant improvements in modeling flux and detector response compared earlier studies. Notably, for first time, we categorize data into starting...
Abstract The IceCube Neutrino Observatory has been continuously taking data to search for <?CDATA ${ \mathcal O }(0.5\mbox{--}10)$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi class="MJX-tex-calligraphic" mathvariant="script">O</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mn>0.5</mml:mn> <mml:mo>–</mml:mo> <mml:mn>10</mml:mn> stretchy="false">)</mml:mo> </mml:math> s long neutrino bursts since 2007. Even if a Galactic core-collapse supernova is...
Active Galactic Nuclei (AGN) are promising candidate sources of high-energy astrophysical neutrinos since they provide environments rich in matter and photon targets where cosmic ray interactions may lead to the production gamma rays neutrinos. We searched for neutrino emission from AGN using $\textit{Swift}$-BAT Spectroscopic Survey (BASS) catalog hard X-ray 12 years IceCube muon track data. First, upon performing a stacked search, no significant was found. Second, we list 43 found an...
The recent IceCube detection of TeV neutrino emission from the nearby active galaxy NGC 1068 suggests that galactic nuclei (AGN) could make a sizable contribution to diffuse flux astrophysical neutrinos. absence $\gamma$-rays indicates production in vicinity supermassive black hole, where high radiation density leads $\gamma$-ray attenuation. Therefore, any potential similar sources is not expected correlate with high-energy $\gamma$-rays. Disk-corona models predict Seyfert galaxies keV...
We provide supporting details for the search a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>3</a:mn><a:mo>+</a:mo><a:mn>1</a:mn></a:mrow></a:math> sterile neutrino using data collected over 10.7 years at IceCube Neutrino Observatory. The analysis uses atmospheric muon-flavored neutrinos from 0.5 to 100 TeV that traverse Earth reach detector and finds best-fit point <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
The IceCube Observatory at the South Pole has been operating in its full configuration since May 2011 with a duty cycle of about 99%. Its main component consists cubic-kilometer array optical sensors deployed deep Glacial ice designed for detection high-energy astrophysical neutrinos. A surface cosmic ray air shower detection, IceTop, and denser inner subdetector, DeepCore, significantly enhance capabilities observatory, making it multipurpose facility. This list contributions to 38th...
We present the first three-parameter fit to a 3+1 sterile neutrino model using 7.634 years of data from IceCube Neutrino Observatory on $\nu_\mu+\overline{\nu}_\mu$ charged-current interactions in energy range 500-9976 GeV. Our analysis is sensitive mass-squared splitting between heaviest and lightest mass state ($\Delta m_{41}^2$), mixing matrix element connecting muon flavor fourth ($|U_{\mu4}|^2$), tau ($|U_{\tau4}|^2$). Predicted propagation effects matter enhance signature through...
Active Galactic Nuclei (AGN) are prime candidate sources of the high-energy, astrophysical neutrinos detected by IceCube. This is demonstrated real-time multi-messenger detection blazar TXS 0506+056 and recent evidence neutrino emission from NGC 1068 a separate time-averaged study. However, production mechanism in AGN not well established which can be resolved via correlation studies with photon observations. For produced due to photohadronic interactions AGN, addition high-energy photons,...
Neutrino oscillations at the highest energies and longest baselines provide a natural quantum interferometer with which to study structure of spacetime test fundamental principles mechanics. If metric has mechanical description, there is generic expectation that its fluctuations Planck scale would introduce non-unitary effects are inconsistent standard unitary time evolution Neutrinos interacting such lose their coherence, deviating from expected oscillatory flavor composition long distances...