A5077864331- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Radio Astronomy Observations and Technology
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Radiation Effects in Electronics
- Embedded Systems Design Techniques
- Solar and Space Plasma Dynamics
- Parallel Computing and Optimization Techniques
- Embedded Systems and FPGA Design
- Medical Image Segmentation Techniques
- Ionosphere and magnetosphere dynamics
- Advancements in PLL and VCO Technologies
Stockholm University
2016-2025
Jagiellonian University
2023-2024
AGH University of Krakow
2017-2024
A. Alikhanyan National Laboratory
2024
Atlas Scientific (United States)
2024
ETH Zurich
2021-2023
The University of Adelaide
2013-2023
University of Vienna
2023
European Organization for Nuclear Research
2023
Beilstein-Institut
2023
We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube detector conducted between May 2010 and 2012. The follows up previous detection two PeV events, with improved sensitivity extended energy coverage down to about 30 TeV. Twenty-six additional were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely origin 28 at 4σ level. These which include highest neutrinos ever have flavors,...
A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided first evidence a neutrino flux of extraterrestrial origin. Results from an analysis using same methods with third year (2012-2013) data complete are consistent previously reported astrophysical in 100 TeV - PeV range at level $10^{-8}\, \mathrm{GeV}\, \mathrm{cm}^{-2}\, \mathrm{s}^{-1}\, \mathrm{sr}^{-1}$ per flavor reject purely atmospheric explanation combined 3-year $5.7 \sigma$. The...
We report on the observation of two neutrino-induced events which have an estimated deposited energy in IceCube detector 1.04±0.16 and 1.14±0.17 PeV, respectively, highest neutrino energies observed so far. These are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within detector. The were discovered a search for ultrahigh neutrinos using data corresponding to 615.9 days effective live time. expected...
The IceCube Neutrino Observatory is a cubic-kilometer-scale high-energy neutrino detector built into the ice at South Pole. Construction of IceCube, largest to date, was completed in 2011 and enabled discovery astrophysical neutrinos. We describe here design, production, calibration digital optical module (DOM), cable systems, computing hardware, our methodology for drilling deployment. also online triggering data filtering systems that select candidate cosmic ray events analysis. Due...
Individual astrophysical sources previously detected in neutrinos are limited to the Sun and supernova 1987A, whereas origins of diffuse flux high-energy cosmic remain unidentified. On 22 September 2017 we a neutrino, IceCube-170922A, with an energy approximately 290 TeV. Its arrival direction was consistent location known gamma-ray blazar TXS 0506+056, observed be flaring state. An extensive multi-wavelength campaign followed, ranging from radio frequencies gamma-rays. These observations...
ABSTRACT The IceCube Collaboration has previously discovered a high-energy astrophysical neutrino flux using events with interaction vertices contained within the instrumented volume of detector. We present complementary measurement charged current muon where vertex can be outside this volume. As consequence large range effective area is significantly larger but field view restricted to Northern Hemisphere. data from 2009 through 2015 have been analyzed likelihood approach based on...
Evidence for an extraterrestrial flux of high-energy neutrinos has now been found in multiple searches with the IceCube detector. The first solid evidence was provided by a search neutrino events deposited energies TeV and interaction vertices inside instrumented volume. Recent analyses suggest that extends to lower is also visible throughgoing, νμ-induced tracks from Northern Hemisphere. Here, we combine results six different astrophysical maximum-likelihood analysis. combined event sample...
Results from the IceCube Neutrino Observatory have recently provided compelling evidence for existence of a high energy astrophysical neutrino flux utilizing dominantly Southern Hemisphere data set consisting primarily ν(e) and ν(τ) charged-current neutral-current (cascade) interactions. In analysis presented here, sample approximately 35,000 muon neutrinos Northern sky is extracted taken during 659.5 days live time recorded between May 2010 2012. While this composed produced by cosmic ray...
The IceCube Neutrino Observatory was designed primarily to search for high-energy (TeV-PeV) neutrinos produced in distant astrophysical objects. A $\ensuremath{\gtrsim}100\text{ }\text{ }\mathrm{TeV}$ interacting inside the instrumented volume has recently provided evidence an isotropic flux of such neutrinos. At lower energies, collects large numbers from weak decays mesons cosmic-ray air showers. Here we present results a neutrino interactions IceCube's between 1 TeV and PeV 641 days data...
Accurate measurement of neutrino energies is essential to many the scientific goals large-volume telescopes. The fundamental observable in such detectors Cherenkov light produced by transit through a medium charged particles created interactions. amount emitted proportional deposited energy, which approximately equal energy for νe and νμ charged-current interactions can be used set lower bound on measure spectra statistically other channels. Here we describe methods performance...
The IceCube neutrino telescope at the South Pole has measured atmospheric muon spectrum as a function of zenith angle and energy in approximate 320 GeV to 20 TeV range, search for oscillation signatures light sterile neutrinos. No evidence anomalous $\nu_\mu$ or $\bar{\nu}_\mu$ disappearance is observed either two independently developed analyses, each using one year data. New exclusion limits are placed on parameter space 3+1 model, which antineutrinos would experience strong MSW-resonant...
We present results from an analysis looking for dark matter annihilation in the Sun with IceCube neutrino telescope. Gravitationally trapped Sun's core can annihilate into Standard Model particles making a source of GeV neutrinos. is able to detect neutrinos energies >100 while its low-energy infill array DeepCore extends this >10 GeV. This uses data gathered austral winters between May 2011 and 2014, corresponding 532 days livetime when Sun, being below horizon, up-going events, easiest...
An adjustable computerized atlas of the human brain has been developed, which can be adapted to fit individual anatomy. It is primarily intended for positron emission tomography (PET) but may also used single photon CT, transmission magnetic resonance imaging, and neu-roimaging-based procedures, such as stereotactic surgery radiotherapy. The based on anatomical information obtained from brains fixed in situ soon after death. All structures have drawn digitized photos slices one cryosectioned...
A measurement of the atmospheric muon neutrino energy spectrum from 100 GeV to 400 TeV was performed using a data sample about 18 000 up-going events in IceCube. Boosted decision trees were used for event selection reject misreconstructed muons and obtain events. Background contamination final is less than 1%. This first neutrinos up TeV, fundamental understanding impact this background on astrophysical observations with The measured consistent predictions...
A search for muon neutrinos from neutralino annihilations in the Sun has been performed with IceCube 22-string neutrino detector using data collected 104.3 days of live time 2007. No excess over expected atmospheric background observed. Upper limits have obtained on annihilation rate captured neutralinos and converted to weakly interacting massive particle (WIMP) proton cross sections WIMP masses range 250-5000 GeV. These results are most stringent date Sun.