Publications (106)
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…
Searching for Decoherence from Quantum Gravity at the IceCube South Pole Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +401
Neutrino oscillations at the highest energies and longest baselines provide a natural quantum interferometer with which to study the structure of spacetime and test the fundamental…
Low Energy Event Reconstruction in IceCube DeepCore
R. Abbasi, M. Ackermann, J. Adams +381
The reconstruction of event-level information, such as the direction or energy of a neutrino interacting in IceCube DeepCore, is a crucial ingredient to many physics analyses. Algo…
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…
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…
Searches for Neutrinos from Gamma-Ray Bursts using the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +378
Gamma-ray bursts (GRBs) are considered as promising sources of ultra-high-energy cosmic rays (UHECRs) due to their large power output. Observing a neutrino flux from GRBs would off…
Density of GeV muons in air showers measured with IceTop
R. Abbasi, M. Ackermann, J. Adams +376
We present a measurement of the density of GeV muons in near-vertical air showers using three years of data recorded by the IceTop array at the South Pole. Depending on the shower…
A Convolutional Neural Network based Cascade Reconstruction for the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +364
Continued improvements on existing reconstruction methods are vital to the success of high-energy physics experiments, such as the IceCube Neutrino Observatory. In IceCube, further…
Search for multi-flare neutrino emissions in 10 years of IceCube data from a catalog of sources
IceCube collaboration, R. Abbasi, M. Ackermann +375
A recent time-integrated analysis of a catalog of 110 candidate neutrino sources revealed a cumulative neutrino excess in the data collected by IceCube between April 6, 2008 and Ju…
SNGuess: A method for the selection of young extragalactic transients
N. Miranda, J. C. Freytag, J. Nordin +7
With a rapidly rising number of transients detected in astronomy, classification methods based on machine learning are increasingly being employed. Their goals are typically to obt…
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…
Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube
R. Abbasi, M. Ackermann, J. Adams +379
The majority of astrophysical neutrinos have undetermined origins. The IceCube Neutrino Observatory has observed astrophysical neutrinos but has not yet identified their sources. B…
Search for Spatial Correlations of Neutrinos with Ultra-High-Energy Cosmic Rays
The ANTARES collaboration, A. Albert, S. Alves +1042
For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question of high-energy astrophysics. One approach for solving this puzzle is to corr…
Measurement of the high-energy all-flavor neutrino-nucleon cross section with IceCube
R. Abbasi, M. Ackermann, J. Adams +361
The flux of high-energy neutrinos passing through the Earth is attenuated due to their interactions with matter. The interaction rate is modulated by the neutrino interaction cross…
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…
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…
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…
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…
Search for High-Energy Neutrino Emission from Galactic X-ray Binaries with IceCube
R. Abbasi, M. Ackermann, J. Adams +379
We present the first comprehensive search for high-energy neutrino emission from high- and low-mass X-ray binaries conducted by IceCube. Galactic X-ray binaries are long-standing c…
Search for High-Energy Neutrinos from Ultra-Luminous Infrared Galaxies with IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +378
Ultra-luminous infrared galaxies (ULIRGs) have infrared luminosities , making them the most luminous objects in the infrared sky. These dust…
IceCube Data for Neutrino Point-Source Searches Years 2008-2018
IceCube Collaboration, R. Abbasi, M. Ackermann +370
IceCube has performed several all-sky searches for point-like neutrino sources using track-like events, including a recent time-integrated analysis using 10 years of IceCube data.…
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…
First Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +380
We present a search for an unstable sterile neutrino by looking for a matter-induced signal in eight years of atmospheric data collected from 2011 to 2019 at the IceCube Ne…
The IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data
R. Abbasi, M. Ackermann, J. Adams +362
The IceCube Neutrino Observatory has established the existence of a high-energy all-sky neutrino flux of astrophysical origin. This discovery was made using events interacting with…
LeptonInjector and LeptonWeighter: A neutrino event generator and weighter for neutrino observatories
R. Abbasi, M. Ackermann, J. Adams +362
We present a high-energy neutrino event generator, called LeptonInjector, alongside an event weighter, called LeptonWeighter. Both are designed for large-volume Cherenkov neutrino…
Search for GeV Neutrino Emission During Intense Gamma-Ray Solar Flares with the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +364
Solar flares convert magnetic energy into thermal and non-thermal plasma energy, the latter implying particle acceleration of charged particles such as protons. Protons are injecte…
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…
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…
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…
The IceCube Collaboration -- Contributions to the 37th International Cosmic Ray Conference (ICRC2021)
IceCube Collaboration, R. Abbasi, M. Ackermann +378
This list of contributions to the 37th International Cosmic Ray Conference in Berlin, Germany (12-23 July 2021) summarizes the latest results from the IceCube Neutrino Observatory.…
Search for Quantum Gravity Using Astrophysical Neutrino Flavour with IceCube
R. Abbasi, M. Ackermann, J. Adams +378
Along their long propagation from production to detection, neutrino states undergo quantum interference which converts their types, or flavours. High-energy astrophysical neutrinos…
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…
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…
The IceCube-Gen2 Collaboration -- Contributions to the 37th International Cosmic Ray Conference (ICRC2021)
Gen2 Collaboration, R. Abbasi, M. Ackermann +437
IceCube-Gen2 is a planned extension of the IceCube Neutrino Observatory at the South Pole. The extension is optimized to search for sources of astrophysical neutrinos from TeV to 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…
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…
All-flavor constraints on nonstandard neutrino interactions and generalized matter potential with three years of IceCube DeepCore data
IceCube Collaboration, R. Abbasi, M. Ackermann +370
We report constraints on nonstandard neutrino interactions (NSI) from the observation of atmospheric neutrinos with IceCube, limiting all individual coupling strengths from a singl…
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…
First all-flavor search for transient neutrino emission using 3-years of IceCube DeepCore data
R. Abbasi, M. Ackermann, J. Adams +359
Since the discovery of a flux of high-energy astrophysical neutrinos, searches for their origins have focused primarily at TeV-PeV energies. Compared to sub-TeV searches, high-ener…
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…
A search for time-dependent astrophysical neutrino emission with IceCube data from 2012 to 2017
IceCube Collaboration, R. Abbasi, M. Ackermann +361
High-energy neutrinos are unique messengers of the high-energy universe, tracing the processes of cosmic-ray acceleration. This paper presents analyses focusing on time-dependent n…
Detection of a particle shower at the Glashow resonance with IceCube
IceCube Collaboration, M. G. Aartsen, R. Abbasi +382
The Glashow resonance describes the resonant formation of a boson during the interaction of a high-energy electron antineutrino with an electron, peaking at an antineutrino e…
Strong constraints on neutrino nonstandard interactions from TeV-scale disappearance at IceCube
IceCube Collaboration, R. Abbasi, M. Ackermann +380
We report a search for nonstandard neutrino interactions (NSI) using eight years of TeV-scale atmospheric muon neutrino data from the IceCube Neutrino Observatory. By reconstructin…
CoSEE-Cat: A Comprehensive Solar Energetic Electron event Catalogue obtained from combined in situ and remote-sensing observations from Solar Orbiter -- Catalogue description and first statistical results
A. Warmuth, F. Schuller, R. Gómez-Herrero +39
(abridged) The acceleration of particles at the Sun and their propagation through interplanetary space are key topics in heliophysics. Specifically, solar energetic electrons (SEEs…
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…
A search for neutrino emission from cores of Active Galactic Nuclei
R. Abbasi, M. Ackermann, J. Adams +376
The sources of the majority of the high-energy astrophysical neutrinos observed with the IceCube neutrino telescope at the South Pole are unknown. So far, only a gamma-ray blazar w…
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…
Evidence for neutrino emission from the nearby active galaxy NGC 1068
IceCube Collaboration, R. Abbasi, M. Ackermann +382
We report three searches for high energy neutrino emission from astrophysical objects using data recorded with IceCube between 2011 and 2020. Improvements over previous work includ…
Transient processing and analysis using : Alert Management, Photometry and Evaluation of Lightcurves
J. Nordin, V. Brinnel, J. van Santen +18
Both multi-messenger astronomy and new high-throughput wide-field surveys require flexible tools for the selection and analysis of astrophysical transients. We here introduce the A…
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…
Detection of astrophysical tau neutrino candidates in IceCube
R. Abbasi, M. Ackermann, J. Adams +361
High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosm…
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…
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 GeV-scale Dark Matter Annihilation in the Sun with IceCube DeepCore
R. Abbasi, M. Ackermann, J. Adams +376
The Sun provides an excellent target for studying spin-dependent dark matter-proton scattering due to its high matter density and abundant hydrogen content. Dark matter particles f…
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…
Framework and Tools for the Simulation and Analysis of the Radio Emission from Air Showers at IceCube
R. Abbasi, M. Ackermann, J. Adams +382
The Surface Enhancement of the IceTop air-shower array will include the addition of radio antennas and scintillator panels, co-located with the existing ice-Cherenkov tanks and cov…
Search for Relativistic Magnetic Monopoles with Eight Years of IceCube Data
IceCube Collaboration, R. Abbasi, M. Ackermann +380
We present an all-sky 90\% confidence level upper limit on the cosmic flux of relativistic magnetic monopoles using 2886 days of IceCube data. The analysis was optimized for monopo…
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…
A muon-track reconstruction exploiting stochastic losses for large-scale Cherenkov detectors
R. Abbasi, M. Ackermann, J. Adams +362
IceCube is a cubic-kilometer Cherenkov telescope operating at the South Pole. The main goal of IceCube is the detection of astrophysical neutrinos and the identification of their s…
Photometric classification of supernovae detected by the Zwicky Transient Facility using noise augmentation
A. Townsend, J. Nordin, M. Kowalski +27
Modern time-domain surveys, such as the Zwicky Transient Facility (ZTF), detect far more extragalactic transients than can be spectroscopically classified. Photometric classificati…
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…
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…
Improved Characterization of the Astrophysical Muon-Neutrino Flux with 9.5 Years of IceCube Data
R. Abbasi, M. Ackermann, J. Adams +376
We present a measurement of the high-energy astrophysical muon-neutrino flux with the IceCube Neutrino Observatory. The measurement uses a high-purity selection of ~650k neutrino-i…
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…
Searching for High-Energy Neutrino Emission from Galaxy Clusters with IceCube
R. Abbasi, M. Ackermann, J. Adams +378
Galaxy clusters have the potential to accelerate cosmic rays (CRs) to ultra-high energies via accretion shocks or embedded CR acceleration sites. CRs with energies below the Hillas…
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…
Observation of high-energy neutrinos from the Galactic plane
R. Abbasi, M. Ackermann, J. Adams +385
The origin of high-energy cosmic rays, atomic nuclei that continuously impact Earth's atmosphere, has been a mystery for over a century. Due to deflection in interstellar magnetic…
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…