Publications (101)
Limits on Neutrino Emission from GRB 221009A from MeV to PeV using the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +382
Gamma-ray bursts (GRBs) have long been considered a possible source of high-energy neutrinos. While no correlations have yet been detected between high-energy neutrinos and GRBs, t…
High-energy neutrino emission from the Milky Way
R. Abbasi, M. Ackermann, J. Adams +440
The Milky Way hosts astrophysical objects that accelerate cosmic rays to energies beyond the reach of terrestrial particle accelerators. It remains a longstanding goal to locate th…
VERITAS and multiwavelength observations of the Blazar B3 2247+381 in response to an IceCube neutrino alert
Atreya Acharyya, Colin B. Adams, Priyadarshini Bangale +494
While the sources of the diffuse astrophysical neutrino flux detected by the IceCube Neutrino Observatory are still largely unknown, one of the promising methods used towards under…
Search for Extremely-High-Energy Neutrinos and First Constraints on the Ultrahigh-Energy Cosmic-Ray Proton Fraction with IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +423
We present a search for the diffuse extremely-high-energy neutrino flux using years of IceCube data. The nonobservation of neutrinos with energies well above $10 \, \mathrm{…
Characterization of the Three-Flavor Composition of Cosmic Neutrinos with IceCube
R. Abbasi, M. Ackermann, J. Adams +429
Neutrinos oscillate over cosmic distances. Using 11.4 years of IceCube data, the flavor composition of the all-sky neutrino flux from 5\,TeV--10\,PeV is studied. We report the firs…
Inverse tridiagonal Z-matrices
J. J. McDonald, R. Nabben, M. Neumann +2
In this paper, we consider matrices whose inverses are tridiagonal Z--matrices. Based on a characterization of symmetric tridiagonal matrices by Gantmacher and Krein, we show that…
X-ray photoelectron 3s spectra of transition metal oxides
V. R. Galakhov, S. Uhlenbrock, S. Bartkowski +6
We present metal 3s x-ray photoelectron spectra of different transition metal oxides. The values of the 3s exchange splitting for the 3d metal oxides are given as a function of the…
Time-Integrated Southern-Sky Neutrino Source Searches with 10 Years of IceCube Starting-Track Events at Energies Down to 1 TeV
R. Abbasi, M. Ackermann, J. Adams +423
In the IceCube Neutrino Observatory, a signal of astrophysical neutrinos is obscured by backgrounds from atmospheric neutrinos and muons produced in cosmic-ray interactions. IceCub…
A Search for IceCube sub-TeV Neutrinos Correlated with Gravitational-Wave Events Detected By LIGO/Virgo
R. Abbasi, M. Ackermann, J. Adams +384
The LIGO/Virgo collaboration published the catalogs GWTC-1, GWTC-2.1 and GWTC-3 containing candidate gravitational-wave (GW) events detected during its runs O1, O2 and O3. These GW…
Universality of Spectator Fragmentation at Relativistic Bombarding Energies
A. Schuettauf, W. D. Kunze, A. Woerner +45
Multi-fragment decays of 129Xe, 197Au, and 238U projectiles in collisions with Be, C, Al, Cu, In, Au, and U targets at energies between E/A = 400 MeV and 1000 MeV have been studied…
Identification and Denoising of Radio Signals from Cosmic-Ray Air Showers using Convolutional Neural Networks
R. Abbasi, M. Ackermann, J. Adams +426
Radio pulses generated by cosmic-ray air showers can be used to reconstruct key properties like the energy and depth of the electromagnetic component of cosmic-ray air showers. Rad…
High-Energy Neutrino Tomography of the Earth's Interior with IceCube
The IceCube Collaboration, R. Abbasi, M. Ackermann +417
The Earth's interior reflects its geological evolution, from accretion to present-day dynamics. Its structure drives the geodynamo in the outer core, generating the magnetic field…
Electronic structure of CaFe2As2: Contribution of itinerant Fe 3d-states to the Fermi Level
E. Z. Kurmaev, J. A. McLeod, A. Buling +7
We present density functional theory (DFT) calculations and a full set of X-ray spectra (resonant inelastic X-ray scattering and X-ray photoelectron spectra) measurements of single…
Search for a light sterile neutrino with 7.5 years of IceCube DeepCore data
R. Abbasi, M. Ackermann, J. Adams +420
We present a search for an eV-scale sterile neutrino using 7.5 years of data from the IceCube DeepCore detector. The analysis uses a sample of 21,914 events with energies between 5…
The IceCube-Gen2 Collaboration -- Contributions to the 38th International Cosmic Ray Conference (ICRC2023)
IceCube-Gen2, :, R. Abbasi +452
IceCube-Gen2 is a planned next-generation neutrino observatory at the South Pole that builds upon the successful design of IceCube. Integrating two complementary detection technolo…
Search for Continuous and Transient Neutrino Emission Associated with IceCube's Highest-Energy Tracks: An 11-Year Analysis
R. Abbasi, M. Ackermann, J. Adams +406
IceCube alert events are neutrinos with a moderate-to-high probability of having astrophysical origin. In this study, we analyze 11 years of IceCube data and investigate 122 alert…
Electronic Structure of Transition-Metal Dicyanamides Me[N(CN)] (Me = Mn, Fe, Co, Ni, Cu)
D. O. Demchenko, Amy Y. Liu, E. Z. Kurmaev +7
The electronic structure of Me[N(CN)] (Me=Mn, Fe, Co, Ni, Cu) molecular magnets has been investigated using x-ray emission spectroscopy (XES) and x-ray photoelectron spectr…
Magnetic circular dichroism in X-ray fluorescence of Heusler alloys at threshold excitation
M. V. Yablonskikh, A. V. Ezhov, V. I. Grebennikov +10
The results of fluorescence measurements of magnetic circular dichroism (MCD) in Mn L_2,L_3 X-ray emission and absorption for Heusler alloys NiMnSb and Co2MnSb are presented. Very…
The IceCube Collaboration -- Contributions to the 38th International Cosmic Ray Conference (ICRC2023)
IceCube, :, R. Abbasi +403
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 of a cubic-kilomet…
Search for 10--1000 GeV neutrinos from Gamma Ray Bursts with IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +405
We present the results of a search for 10--1,000 GeV neutrinos from 2,268 gamma-ray bursts over 8 years of IceCube-DeepCore data. This work probes burst physics below the photosphe…
IceCube Second Track Data Release IceTracks-DR2: Data from 2008-2022 for Neutrino Source Searches
R. Abbasi, M. Ackermann, J. Adams +412
We present IceCube's latest release of muon track data for neutrino point-source searches, extending the previously published 10-year dataset to cover 14 years of observations (Apr…
Electronic structure of VO2 studied by x-ray photoelectron and x-ray emission spectroscopies
E. Z. Kurmaev, V. M. Cherkashenko, Yu. M. Yarmoshenko +8
A VO2 single-crystal has been subject of a combined investigation by high resolution XPS, x-ray emission spectroscopy with electron and energy-selective x-ray excitation (V L-alpha…
Observation of Seven Astrophysical Tau Neutrino Candidates with IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +401
We report on a measurement of astrophysical tau neutrinos with 9.7 years of IceCube data. Using convolutional neural networks trained on images derived from simulated events, seven…
Electronic structure study by means of X-ray spectroscopy and theoretical calculations of the "ferric star" single molecule magnet
A. F. Takacs, M. Neumann, A. V. Postnikov +5
The electronic structure of the single molecule magnet system M[Fe(L)2]3*4CHCl3 (M=Fe,Cr; L=CH3N(CH2CH2O)2) has been studied using X-ray photoelectron spectroscopy, X-ray absorptio…
Search for joint multimessenger signals from potential galactic cosmic-ray accelerators with HAWC and IceCube
R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez +489
The origin of high-energy galactic cosmic rays is yet to be understood, but some galactic cosmic-ray accelerators can accelerate cosmic rays up to PeV energies. The high-energy cos…
Search for neutrino doublets and triplets using 11.4 years of IceCube data
R. Abbasi, M. Ackermann, J. Adams +423
We report a search for high-energy astrophysical neutrino multiplets, detections of multiple neutrino clusters in the same direction within 30 days, based on an analysis of 11.4 ye…
Acceptance Tests of more than 10 000 Photomultiplier Tubes for the multi-PMT Digital Optical Modules of the IceCube Upgrade
R. Abbasi, M. Ackermann, J. Adams +420
More than 10,000 photomultiplier tubes (PMTs) with a diameter of 80 mm will be installed in multi-PMT Digital Optical Modules (mDOMs) of the IceCube Upgrade. These have been tested…
ELECTRONIC STRUCTURE OF FeSi
V. R. Galakhov, E. Z. Kurmaev, V. M. Cherkashenko +8
The full set of high-energy spectroscopy measurements including X-ray photoelectron valence band spectra and soft X-ray emission valence band spectra of both components of FeSi (Fe…
Deep Search for Joint Sources of Gravitational Waves and High-Energy Neutrinos with IceCube During the Third Observing Run of LIGO and Virgo
The IceCube Collaboration, R. Abbasi, M. Ackermann +2209
The discovery of joint sources of high-energy neutrinos and gravitational waves has been a primary target for the LIGO, Virgo, KAGRA, and IceCube observatories. The joint detection…
Electronic structure of MgB: X-ray emission and absorption studies
E. Z. Kurmaev, I. I. Lyakhovskaya, J. Kortus +8
Measurements of x-ray emission and absorption spectra of the constituents of MgB are presented. The results obtained are in good agreement with calculated x-ray spectra, with d…
Search for Extended Sources of Neutrino Emission in the Galactic Plane with IceCube
R. Abbasi, M. Ackermann, J. Adams +404
The Galactic plane, harboring a diffuse neutrino flux, is a particularly interesting target to study potential cosmic-ray acceleration sites. Recent gamma-ray observations by HAWC…
Constraining High-Energy Neutrino Emission from Supernovae with IceCube
R. Abbasi, M. Ackermann, J. Adams +384
Core-collapse supernovae are a promising potential high-energy neutrino source class. We test for correlation between seven years of IceCube neutrino data and a catalog containing…
Electronic structure of Co_xTiSe_2 and Cr_xTiSe_2
A. N. Titov, A. V. Kuranov, V. G. Pleschev +7
The results of investigations of intercalated compounds Cr_xTiSe_2 and Co_xTiSe_2 by X-ray photoelectron spectroscopy (XPS) and X-ray emission spectroscopy (XES) are presented. The…
All-sky neutrino point-source search with IceCube combined track and cascade data
R. Abbasi, M. Ackermann, J. Adams +424
Despite extensive efforts, discovery of high-energy astrophysical neutrino sources remains elusive. We present an event-level simultaneous maximum likelihood analysis of tracks and…
Deterministic photon storage and readout in a semimagnetic quantum-dot--cavity system doped with a single Mn ion
M. Cosacchi, T. Seidelmann, A. Mielnik-Pyszczorski +6
Light trapping is a crucial mechanism for synchronization in optical communication. Especially on the level of single photons, control of the exact emission time is desirable. In t…
The IceCube-Gen2 Collaboration -- Contributions to the 39th International Cosmic Ray Conference (ICRC2025)
R. Abbasi, M. Ackermann, J. Adams +465
IceCube-Gen2 is a planned next-generation neutrino observatory at the South Pole that builds upon the successful design of IceCube. Integrating two complementary detection technolo…
Neural posterior estimation of the neutrino direction in IceCube using transformer-encoded normalizing flows on the sphere
R. Abbasi, M. Ackermann, J. Adams +411
IceCube is a cubic-kilometer-scale neutrino detector located at the geographic South Pole. A precise directional reconstruction of IceCube neutrinos is vital for associations with…
Search for Heavy Neutral Leptons with IceCube DeepCore
R. Abbasi, M. Ackermann, J. Adams +421
The observation of neutrino oscillations has established that neutrinos have non-zero masses. This phenomenon is not explained by the Standard Model of particle physics, but one vi…
Experimental Evidence of Cage Conduction Bands in Superconducting Cement 12CaO7AlO
J. A. McLeod, A. Buling, E. Z. Kurmaev +6
Natural 12CaO7AlO (C12A7) is a wide bandgap insulator, but conductivity can be realized by introducing oxygen deficiency. Currently, there are two competing models e…
Observation of Seasonal Variations of the Flux of High-Energy Atmospheric Neutrinos with IceCube
R. Abbasi, M. Ackermann, J. Adams +389
Atmospheric muon neutrinos are produced by meson decays in cosmic-ray-induced air showers. The flux depends on meteorological quantities such as the air temperature, which affects…
Combined study of KNbO3 and KTaO3 by different techniques of photoelectron and X-ray emission spectroscopy
A. V. Postnikov, B. Schneider, M. Neumann +5
The new results are presented of the experimental study of KNbO3 and KTaO3 by means of X-ray photoelectron spectroscopy, soft X-ray emission and X-ray fluorescence spectroscopy. In…
A Search for Millimeter-Bright Blazars as Astrophysical Neutrino Sources
R. Abbasi, M. Ackermann, J. Adams +424
The powerful jets of blazars have been historically considered as likely sites of high-energy cosmic-ray acceleration. However, particulars of the launched jet and the locations of…
Prompt Searches for Very-High-Energy γ-Ray Counterparts to IceCube Astrophysical Neutrino Alerts
J. Abhir, A. Biland, K. Brand +817
The search for sources of high-energy astrophysical neutrinos can be significantly advanced through a multi-messenger approach, which seeks to detect the gamma rays that accompany…
Observation of Cosmic-Ray Anisotropy in the Southern Hemisphere with 12 yr of Data Collected by the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +434
We analyzed the 7.92 cosmic-ray-induced muon events collected by the IceCube Neutrino Observatory from May 13, 2011, when the fully constructed experiment started t…
All-Sky Search for Transient Astrophysical Neutrino Emission with 10 Years of IceCube Cascade Events
R. Abbasi, M. Ackermann, J. Adams +403
We present the results of a time-dependent search for neutrino flares in data collected by IceCube between May 2011 and 2021. This data set contains cascade-like events originating…
Searches for Neutrinos from LHAASO ultra-high-energy γ-ray sources using the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +387
Galactic PeVatrons are Galactic sources theorized to accelerate cosmic rays up to PeV in energy. The accelerated cosmic rays are expected to interact hadronically with nearby ambie…
Towards the chiral phase transition in the Roberge-Weiss plane
F. Cuteri, J. Goswami, F. Karsch +5
We discuss the interplay between chiral and center sector phase transitions that occur in QCD with an imaginary quark chemical potential . Based on a finite size…
Estimating the sensitivity of the IceCube Upgrade to probe the interior of the Earth using atmospheric neutrino oscillations
The IceCube Collaboration, R. Abbasi, M. Ackermann +421
The IceCube Upgrade is a densely instrumented central region of the IceCube Neutrino Observatory, deployed during the 2025-26 polar season. It will reduce the detector's energy thr…
Methods and stability tests associated with the sterile neutrino search using improved high-energy event reconstruction in IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +419
We provide supporting details for the search for a 3+1 sterile neutrino using data collected over eleven years at the IceCube Neutrino Observatory. The analysis uses atmospheric mu…
Characterization of the Astrophysical Diffuse Neutrino Flux using Starting Track Events in IceCube
R. Abbasi, M. Ackermann, J. Adams +415
A measurement of the diffuse astrophysical neutrino spectrum is presented using IceCube data collected from 2011-2022 (10.3 years). We developed novel detection techniques to searc…
Probing the PeV Region in the Astrophysical Neutrino Spectrum using from the Southern Sky
R. Abbasi, M. Ackermann, J. Adams +425
IceCube has observed a diffuse astrophysical neutrino flux over the energy region from a few TeV to a few PeV. At PeV energies, the spectral shape is not yet well measured due to t…
Probing the connection between IceCube neutrinos and MOJAVE AGN
R. Abbasi, M. Ackermann, J. Adams +420
Active Galactic Nuclei (AGN) are prime candidate sources of the high-energy, astrophysical neutrinos detected by IceCube. This is demonstrated by the real-time multi-messenger dete…
D-Egg: a Dual PMT Optical Module for IceCube
R. Abbasi, M. Ackermann, J. Adams +389
The D-Egg, an acronym for ``Dual optical sensors in an Ellipsoid Glass for Gen2,'' is one of the optical modules designed for future extensions of the IceCube experiment at the Sou…
Search for correlations of high-energy neutrinos detected in IceCube with radio-bright AGN and gamma-ray emission from blazars
R. Abbasi, M. Ackermann, J. Adams +400
The IceCube Neutrino Observatory sends realtime neutrino alerts with high probability of being astrophysical in origin. We present a new method to correlate these events and possib…
Measurement of the mean number of muons with energies above 500 GeV in air showers detected with the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +413
We present a measurement of the mean number of muons with energies larger than 500 GeV in near-vertical extensive air showers initiated by cosmic rays with primary energies between…
Constraints on the Correlation of IceCube Neutrinos with Tracers of Large-Scale Structure
R. Abbasi, M. Ackermann, J. Adams +430
The IceCube Neutrino Observatory has observed extragalactic astrophysical neutrinos with an apparently isotropic distribution. Only a small fraction of the observed astrophysical n…
X-ray spectra of 3d metals of Heusler alloys and LaSmMnSi compounds
M. V. Yablonskikh, Yu. M. Yarmoshenko, E. G. Gerasimov +4
The Mn x-ray emission spectra and x-ray photoemission spectra of Mn-based Heusler alloys CoMnAl, CoMnSb and LaSmMnSi compounds (x=0, 0.8) have been meas…
XRBcats: Galactic Low Mass X-ray Binary Catalogue
A. Avakyan, M. Neumann, A. Zainab +3
We present a new catalogue of low-mass X-ray binaries (LMXBs) in the Galaxy. The catalogue contains source names, coordinates, source types, fluxes, distances, system parameters, a…
Effect of 3d-doping on the electronic structure of BaFe2As2
J. A. McLeod, A. Buling, R. J. Green +10
The electronic structure of BaFe2As2 doped with Co, Ni, and Cu has been studied by a variety of experimental and theoretical methods, but a clear picture of the dopant 3d states ha…
A search for an eV-scale sterile neutrino using improved high-energy event reconstruction in IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +419
This Letter presents the result of a 3+1 sterile neutrino search using 10.7 years of IceCube data. We analyze atmospheric muon neutrinos that traverse the Earth with energies rangi…
IceCube search for neutrinos coincident with gravitational wave events from LIGO/Virgo run O3
R. Abbasi, M. Ackermann, J. Adams +378
Using data from the IceCube Neutrino Observatory, we searched for high-energy neutrino emission from the gravitational-wave events detected by advanced LIGO and Virgo detectors dur…
Improved measurements of the TeV-PeV extragalactic neutrino spectrum from joint analyses of IceCube tracks and cascades
R. Abbasi, M. Ackermann, J. Adams +424
The IceCube South Pole Neutrino Observatory has discovered the presence of a diffuse astrophysical neutrino flux at energies of TeV and beyond using neutrino induced muon tracks an…
Evidence for a Spectral Break or Curvature in the Spectrum of Astrophysical Neutrinos from 5 TeV--10 PeV
R. Abbasi, M. Ackermann, J. Adams +424
We report improved measurements of the all flavor astrophysical neutrino spectrum with IceCube by combining complementary neutrino samples in two independent analyses. Both analyse…
Sensitivity Projections for Low-Mass Dark Matter Annihilation with the IceCube Upgrade
R. Abbasi, M. Ackermann, J. Adams +412
The IceCube Upgrade, an extension designed to enhance the IceCube Neutrino Observatory's detection of neutrinos with energies between 1 GeV and 500 GeV, will markedly improve IceCu…
Velocity autocorrelation in liquid para-hydrogen by quantum simulations for first-principle computations of the neutron cross sections
E. Guarini, M. Neumann, U. Bafile +4
Accurate knowledge of the single-molecule (self) translational dynamics of liquid para-H2 is an essential requirement for the calculation of the neutron scattering properties of th…
Density of states and dynamical crossover in a dense fluid revealed by exponential mode analysis of the velocity autocorrelation function
S. Bellissima, M. Neumann, E. Guarini +2
Extending a previous study of the velocity autocorrelation function (VAF) in a simulated Lennard-Jones fluid to cover higher-density and lower-temperature states, we show that the…
Evidence for neutrino emission from X-ray Bright Seyfert Galaxies in the Southern Hemisphere using Enhanced Starting Track Events with IceCube
R. Abbasi, M. Ackermann, J. Adams +428
IceCube recently reported the observation of TeV neutrinos from the nearby Seyfert galaxy NGC~1068, and the corresponding neutrino flux is significantly higher than the upper limit…
A Search for Coincident Neutrino Emission from Fast Radio Bursts with Seven Years of IceCube Cascade Events
R. Abbasi, M. Ackermann, J. Adams +382
This paper presents the results of a search for neutrinos that are spatially and temporally coincident with 22 unique, non-repeating Fast Radio Bursts (FRBs) and one repeating FRB…
WavePID: Low-energy flavor identification using single-PMT time series in IceCube
R. Abbasi, M. Ackermann, J. Adams +416
The IceCube Neutrino Observatory, a cubic-kilometer detector at the South Pole, identifies neutrino flavor through event morphology. Sparse photon detection makes this classificati…
Carbon States in Carbon-Encapsulated Nickel Nanoparticles Studied by Means of X-Ray Absorption, Emission, and Photoelectron Spectroscopies
V. R. Galakhov, A. Buling, M. Neumann +8
Electronic structure of nickel nanoparticles encapsulated in carbon was characterized by photoelectron, X-ray absorption, and X-ray emission spectroscopies. Experimental spectra ar…
Improved modeling of in-ice particle showers for IceCube event reconstruction
R. Abbasi, M. Ackermann, J. Adams +415
The IceCube Neutrino Observatory relies on an array of photomultiplier tubes to detect Cherenkov light produced by charged particles in the South Pole ice. IceCube data analyses de…
Electronic Structure of Cu_(1-x)Ni_xRh_2S_4 and CuRh_2Se_4: Band Structure Calculations, X-ray Photoemission and Fluorescence Measurements
G. L. W. Hart, W. E. Pickett, E. Z. Kurmaev +7
The electronic structure of spinel-type Cu_(1-x)Ni_xRh_2S_4 (x = 0.0, 0.1, 0.3, 0.5, 1.0) and CuRh_2Se_4 compounds has been studied by means of X-ray photoelectron and fluorescent…
Citizen Science for IceCube: Name that Neutrino
R. Abbasi, M. Ackermann, J. Adams +412
Name that Neutrino is a citizen science project where volunteers aid in classification of events for the IceCube Neutrino Observatory, an immense particle detector at the geographi…
The IceCube Collaboration -- Contributions to the 39th International Cosmic Ray Conference (ICRC2025)
R. Abbasi, M. Ackermann, J. Adams +426
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 of a cubic-kilomet…
Search for neutrino lines from dark matter annihilation and decay with IceCube
The IceCube Collaboration, R. Abbasi, M. Ackermann +393
Dark Matter particles in the Galactic Center and halo can annihilate or decay into a pair of neutrinos producing a monochromatic flux of neutrinos. The spectral feature of this sig…
Search for GeV-scale Dark Matter from the Galactic Center with IceCube-DeepCore
The IceCube Collaboration, R. Abbasi, M. Ackermann +431
Models describing dark matter as a novel particle often predict that its annihilation or decay into Standard Model particles could produce a detectable neutrino flux in regions of…
Electronic Structure and Valence Band Spectra of Bi4Ti3O12
A. V. Postnikov, St. Bartkowski, F. Mersch +5
The x-ray photoelectron valence band spectrum and x-ray emission valence-band spectra (Ti K _beta_5, Ti L_alpha, O K_alpha) of Bi4Ti3O12 are presented (analyzed in the common energ…
Probing neutrino emission at GeV energies from compact binary mergers with the IceCube Neutrino Observatory
IceCube Collaboration, R. Abbasi, M. Ackermann +415
The advent of multi-messenger astronomy has allowed for new types of source searches by neutrino detectors. We present the results of the search for 0.5-100 GeV astrophysical neutr…
Lattice QCD at Imaginary Chemical Potential in the Chiral Limit
D. A. Clarke, Jishnu Goswami, F. Karsch +3
We report on an ongoing study on the interplay between Roberge-Weiss (RW) and chiral transitions in simulations of (2+1)-flavor QCD with an imaginary chemical potential. We establi…
The LED calibration systems for the mDOM and D-Egg sensor modules of the IceCube Upgrade
R. Abbasi, M. Ackermann, J. Adams +432
The IceCube Neutrino Observatory, instrumenting about 1 km of deep, glacial ice at the geographic South Pole, is due to be enhanced with the IceCube Upgrade. The IceCube Upgrad…
Constraints on populations of neutrino sources from searches in the directions of IceCube neutrino alerts
R. Abbasi, M. Ackermann, J. Adams +380
Beginning in 2016, the IceCube Neutrino Observatory has sent out alerts in real time containing the information of high-energy (~TeV) neutrino candidate events with…
Electron Spectroscopy and Density-Functional Study of "Ferric Wheel" Molecules
A. V. Postnikov, S. G. Chiuzbaian, M. Neumann +1
The Li-centered "ferric wheel" molecules with six oxo-bridged iron atoms form molecular crystals. We probed their electronic structure by X-ray photoelectron (XPS) and soft X-ray e…
Limits on GeV-scale WIMP Annihilation in Dwarf Spheroidals with IceCube DeepCore
R. Abbasi, M. Ackermann, J. Adams +428
Dark matter is approximately five times more abundant than baryonic matter in the universe, but its physical nature continues to elude physicists. One potential candidate for dark…
Electronic structure of magnetic molecules V15: LDA+U calculations, X-ray emission and photoelectron spectra
D. W. Boukhvalov, E. Z. Kurmaev, A. Moewes +10
Electronic structure of V magnetic molecules (K [V As O (HO)] \cdot 8HO)$ has been studied using LSDA+U band structure calculations, and measur…
Measurement of Atmospheric Neutrino Mixing with Improved IceCube DeepCore Calibration and Data Processing
IceCube Collaboration, R. Abbasi, M. Ackermann +404
We describe a new data sample of IceCube DeepCore and report on the latest measurement of atmospheric neutrino oscillations obtained with data recorded between 2011-2019. The sampl…
Seasonal Variations of the Atmospheric Muon Neutrino Spectrum measured with IceCube
R. Abbasi, M. Ackermann, J. Adams +425
This study presents an energy-dependent analysis of seasonal variations in the atmospheric muon neutrino spectrum, using 11.3 years of data from the IceCube Neutrino Observatory. B…
Search for neutrino emission from hard X-ray AGN with IceCube
R. Abbasi, M. Ackermann, J. Adams +422
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 r…
Limiting the Parameter Space for Unstable eV-scale Neutrinos Using IceCube Data
R. Abbasi, M. Ackermann, J. Adams +422
This Letter extends a recent IceCube sterile neutrino search to include unstable sterile neutrinos within the context of a model termed 3+1+Decay, which expands upon the 3+1 model…
Exploration of mass splitting and muon/tau mixing parameters for an eV-scale sterile neutrino with IceCube
R. Abbasi, M. Ackermann, J. Adams +421
We present the first three-parameter fit to a 3+1 sterile neutrino model using 7.634 years of data from the IceCube Neutrino Observatory on charged-current i…
Search for sub-TeV Neutrino Emission from Novae with IceCube-DeepCore
R. Abbasi, M. Ackermann, J. Adams +383
The understanding of novae, the thermonuclear eruptions on the surfaces of white dwarf stars in binaries, has recently undergone a major paradigm shift. Though the bolometric lumin…
Graph Neural Networks for Low-Energy Event Classification & Reconstruction in IceCube
R. Abbasi, M. Ackermann, J. Adams +380
IceCube, a cubic-kilometer array of optical sensors built to detect atmospheric and astrophysical neutrinos between 1 GeV and 1 PeV, is deployed 1.45 km to 2.45 km below the surfac…
Microscopic structure of liquid hydrogen: a neutron diffraction experiment
M. Celli, U. Bafile, G. J. Cuello +5
We have measured the center-of-mass structure factor S(k) of liquid para-hydrogen by neutron diffraction, using the D4C diffractometer at the Institute Laue Langevin, Grenoble, Fra…
Constraining the Prompt Atmospheric Neutrino Flux Combining IceCube's Cascade and Track Samples
R. Abbasi, M. Ackermann, J. Adams +428
The IceCube Neutrino Observatory has observed a diffuse flux of high-energy astrophysical neutrinos for more than a decade. A relevant background to the astrophysical flux is promp…
Measurement of the inelasticity distribution of neutrino-nucleon interactions for with IceCube DeepCore
IceCube Collaboration, R. Abbasi, M. Ackermann +425
We report a study of the inelasticity distribution in the scattering of neutrinos of energy GeV off nucleons. Using atmospheric muon neutrinos detected in IceCube's sub-ar…
Quantifying local heterogeneities in the 3D morphology of X-PVMPT battery electrodes based on FIB-SEM measurements
L. Dodell, M. Neumann, M. Osenberg +5
Organic electrode-active materials (OAMs) not only enable a variety of charge and storage mechanisms, but are also safer for the environment and of lower cost compared to materials…
Search for High-Energy Neutrinos From the Sun Using Ten Years of IceCube Data
R. Abbasi, M. Ackermann, J. Adams +424
In this Letter, we present the results of a search for high-energy neutrinos produced by the annihilation of dark matter particles trapped in the Sun. Using 9.3 and 10.4 years of d…
IceCube Search for Neutrino Emission from X-ray Bright Seyfert Galaxies
R. Abbasi, M. Ackermann, J. Adams +421
The recent IceCube detection of TeV neutrino emission from the nearby active galaxy NGC 1068 suggests that active galactic nuclei (AGN) could make a sizable contribution to the dif…
IceCat-1: the IceCube Event Catalog of Alert Tracks
R. Abbasi, M. Ackermann, J. Adams +390
We present a catalog of likely astrophysical neutrino track-like events from the IceCube Neutrino Observatory. IceCube began reporting likely astrophysical neutrinos in 2016 and th…
IceCube Real-time Searches for High-energy Neutrinos Coincident with LIGO/Virgo/KAGRA Gravitational-Wave Alerts in O4a
The IceCube Collaboration, R. Abbasi, M. Ackermann +418
Gravitational-wave events from mergers of compact objects are a predicted source of high-energy neutrinos. Using data from the IceCube Neutrino Observatory, we search for neutrinos…
Evidence for Neutrino Emission from X-Ray-bright Active Galactic Nuclei with IceCube
R. Abbasi, M. Ackermann, J. Adams +429
Recently, IceCube reported neutrino emission from the Seyfert galaxy NGC 1068. Using 13.1 years of IceCube data, we present a follow-up search for neutrino sources in the northern…