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View article: Variance Preserving Spectral Subsampling
Variance Preserving Spectral Subsampling Open
Generating statistically faithful short-duration gamma-ray spectra from a single long measurement is essential in nuclear safeguards, supporting tasks such as algorithm development and machine-learning applications, especially when list-mo…
View article: Technosignature Searches with Real-time Alert Brokers
Technosignature Searches with Real-time Alert Brokers Open
We present an exploration of technosignature research that is possible using real-time alert brokers from surveys such as the Zwicky Transient Facility (ZTF) and the upcoming Legacy Survey of Space and Time (LSST). Nine alert brokers curre…
View article: NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1) Open
We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin Observatory. The third interstellar obj…
View article: Using Anomaly Detection to Search for Technosignatures in Breakthrough Listen Observations
Using Anomaly Detection to Search for Technosignatures in Breakthrough Listen Observations Open
We implement a machine learning algorithm to search for extraterrestrial technosignatures in radio observations of several hundred nearby stars, obtained with the Parkes and Green Bank Telescopes by the Breakthrough Listen collaboration. A…
View article: Using anomaly detection to search for technosignatures in Breakthrough Listen observations
Using anomaly detection to search for technosignatures in Breakthrough Listen observations Open
We implement a machine learning algorithm to search for extra-terrestrial technosignatures in radio observations of several hundred nearby stars, obtained with the Parkes and Green Bank Telescopes by the Breakthrough Listen collaboration. …
View article: A Novel Technosignature Search in the Breakthrough Listen Green Bank Telescope Archive
A Novel Technosignature Search in the Breakthrough Listen Green Bank Telescope Archive Open
The Breakthrough Listen program is, to date, the most extensive search for technological life beyond Earth. Over the past 9 yr, it has surveyed thousands of nearby stars and close to 100 nearby galaxies with telescopes around the world, in…
View article: DEVELOPING HYBRID KIDNEY CARE MODELS WITH FACILITATED MODELLING
DEVELOPING HYBRID KIDNEY CARE MODELS WITH FACILITATED MODELLING Open
This paper presents a simulation modelling study aimed at supporting capacity planning of kidney replacement therapy services offered to patients at different stages of kidney failure. The model consists of a combined discrete-event simula…
View article: Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches
Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches Open
The search for radio technosignatures is an anomaly detection problem: Candidate signals represent needles of interest in the proverbial haystack of radio-frequency interference (RFI). Current search frameworks find an enormity of false-po…
View article: Detection of 2.223 MeV γ-rays for Water Identification in Spent Nuclear Fuel Assemblies
Detection of 2.223 MeV γ-rays for Water Identification in Spent Nuclear Fuel Assemblies Open
The detection of 2.223 MeV γ-ray emissions resulting from neutron capture on hydrogen, to monitor water presence in spent nuclear fuel (SNF) assemblies is described. Water detection is crucial because its ingress into dry storage systems o…
View article: Observation of Forbush decreases and GLE-74 recorded during ground-level neutron monitoring survey from various sites across the British Isles
Observation of Forbush decreases and GLE-74 recorded during ground-level neutron monitoring survey from various sites across the British Isles Open
Ground-level neutron monitors (NMs) are essential tools for monitoring space weather events, including the detection and alerting of ground-level enhancement (GLE) events. This study presents findings from a neutron monitoring survey using…
View article: A Novel Technosignature Search in the Breakthrough Listen Green Bank Telescope Archive
A Novel Technosignature Search in the Breakthrough Listen Green Bank Telescope Archive Open
The Breakthrough Listen program is, to date, the most extensive search for technological life beyond Earth. As part of this goal, over the past nine years it has surveyed thousands of nearby stars, close to 100 nearby galaxies, and a varie…
View article: Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches
Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches Open
The search for radio technosignatures is an anomaly detection problem: Candidate signals represent needles of interest in the proverbial haystack of radio-frequency interference (RFI). Current search frameworks find an enormity of false-po…
View article: The Breakthrough Listen Search for Intelligent Life: Galactic Center Search for Scintillated Technosignatures
The Breakthrough Listen Search for Intelligent Life: Galactic Center Search for Scintillated Technosignatures Open
The search for extraterrestrial intelligence at radio frequencies has focused on spatial filtering as a primary discriminant from terrestrial interference. Individual search campaigns further choose targets or frequencies based on criteria…
View article: The First High Frequency Technosignature Search Survey with the Sardinia Radio Telescope
The First High Frequency Technosignature Search Survey with the Sardinia Radio Telescope Open
The quest for radio signals from technologically-advanced extraterrestrial intelligence has traditionally concentrated on the vicinity of 1.4 GHz. In this paper, we extend the search to unprecedented territories, detailing our extensive ob…
View article: Covariance Structure of Pu Isotopic Compositions Obtained Using FRAM 5.2
Covariance Structure of Pu Isotopic Compositions Obtained Using FRAM 5.2 Open
In the nondestructive assay of special nuclear materials, isotopic determination based on the analysis of high-purity Ge high-resolution gamma-ray spectra plays a pivotal role. The isotopic results, which are based on a relative measuremen…
View article: High-Resolution Gamma Spectrometry Data Set for High Burnup Pressurized Water Reactor Used Fuel
High-Resolution Gamma Spectrometry Data Set for High Burnup Pressurized Water Reactor Used Fuel Open
Over the past decade, considerable resources have been applied to investigate verification of used nuclear fuel assemblies for international safeguards. The opportunity to expand the available data used to validate these verification techn…
View article: Fault Detection Methods and Early Data in New UK Cosmic Ray Neutron Monitor
Fault Detection Methods and Early Data in New UK Cosmic Ray Neutron Monitor Open
In recent years, the impacts of solar activity on the earth’s surface, atmospheric and orbital environments have become increasingly important. Governments around the world have identified “space weather” as a potentially…
View article: Ground-level neutron monitoring survey over the United Kingdom
Ground-level neutron monitoring survey over the United Kingdom Open
Space weather events impose a threat on critical infrastructures such as electrical power grids, global navigation satellite systems, satellite operations, aviation technology and radio communication channels at various frequencies. We pre…
View article: Enrichment measurement by passive γ-ray spectrometry of uranium dioxide fuel pellets using a europium-doped, strontium iodide scintillator
Enrichment measurement by passive γ-ray spectrometry of uranium dioxide fuel pellets using a europium-doped, strontium iodide scintillator Open
The performance of a europium-doped strontium iodide scintillator for uranium enrichment measurement of a variety of sintered uranium dioxide fuel pellets is described and compared to that of caesium iodide and sodium iodide. Enrichment ha…
View article: The Weird and the Wonderful in Our Solar System: Searching for Serendipity in the Legacy Survey of Space and Time
The Weird and the Wonderful in Our Solar System: Searching for Serendipity in the Legacy Survey of Space and Time Open
We present a novel method for anomaly detection in solar system object data in preparation for the Legacy Survey of Space and Time. We train a deep autoencoder for anomaly detection and use the learned latent space to search for other inte…
View article: Searching the SN 1987A SETI Ellipsoid with TESS
Searching the SN 1987A SETI Ellipsoid with TESS Open
The SETI Ellipsoid is a strategy for technosignature candidate selection which assumes that extraterrestrial civilizations who have observed a galactic-scale event -- such as supernova 1987A -- may use it as a Schelling point to broadcast …
View article: Nuclear Material Detection by One-Short-Pulse-Laser-Driven Neutron Source
Nuclear Material Detection by One-Short-Pulse-Laser-Driven Neutron Source Open
Covered in the PowerPoint presentation are the following areas: Motivation and requirements for active interrogation of nuclear material; laser-driven neutron source; neutron diagnostics; active interrogation of nuclear material; and, conc…