Matt L. Sampson
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View article: A novel approach to classification of ECG arrhythmia types with latent ODEs
A novel approach to classification of ECG arrhythmia types with latent ODEs Open
12-lead ECGs with high sampling frequency are the clinical gold standard for arrhythmia detection, but their short-term, spot-check nature often misses intermittent events. Wearable ECGs enable long-term monitoring but suffer from irregula…
View article: Cosmic ray and plasma coupling for isothermal supersonic turbulence in the magnetized interstellar medium
Cosmic ray and plasma coupling for isothermal supersonic turbulence in the magnetized interstellar medium Open
Cosmic rays (CRs) are an integral part of the non-thermal pressure budget in the interstellar medium (ISM) and are the leading-order ionization mechanism in cold molecular clouds. We study the impacts that different microphysical CR diffus…
View article: Path-minimizing latent ODEs for improved extrapolation and inference
Path-minimizing latent ODEs for improved extrapolation and inference Open
Latent ordinary differential equation (ODE) models provide flexible descriptions of dynamic systems, but they can struggle with extrapolation and predicting complicated non-linear dynamics. The latent ODE approach implicitly relies on enco…
View article: Path-minimizing Latent ODEs for improved extrapolation and inference
Path-minimizing Latent ODEs for improved extrapolation and inference Open
Latent ODE models provide flexible descriptions of dynamic systems, but they can struggle with extrapolation and predicting complicated non-linear dynamics. The latent ODE approach implicitly relies on encoders to identify unknown system p…
View article: Disentangling transients and their host galaxies with Scarlet2: A framework to forward model multi-epoch imaging
Disentangling transients and their host galaxies with Scarlet2: A framework to forward model multi-epoch imaging Open
Many science cases for wide-field time-domain surveys rely on accurate identification and characterization of the galaxies hosting transient and variable objects. In the era of the Legacy Survey of Space and Time (LSST) at the Vera C. Rubi…
View article: Score-matching neural networks for improved multi-band source separation
Score-matching neural networks for improved multi-band source separation Open
We present the implementation of a score-matching neural network that represents a data-driven prior for non-parametric galaxy morphologies. The gradients of this prior can be incorporated in the optimization of galaxy models to aid with t…
View article: Correction to: Cosmic Ray Interstellar Propagation Tool using Itô Calculus (<scp>criptic</scp>): Software for simultaneous calculation of cosmic ray transport and observational signatures
Correction to: Cosmic Ray Interstellar Propagation Tool using Itô Calculus (<span>criptic</span>): Software for simultaneous calculation of cosmic ray transport and observational signatures Open
The paper 'Cosmic Ray Interstellar Propagation Tool using It ˆ o Calculus ( CRIPTIC ): software for simultaneous calculation of cosmic ray transport and observational signatures' (Krumholz, Crocker & Sampson 2022 ) contains an error in the…
View article: Spotting Hallucinations in Inverse Problems with Data-Driven Priors
Spotting Hallucinations in Inverse Problems with Data-Driven Priors Open
Hallucinations are an inescapable consequence of solving inverse problems with deep neural networks. The expressiveness of recent generative models is the reason why they can yield results far superior to conventional regularizers; it can …
View article: Ion alfvén velocity fluctuations and implications for the diffusion of streaming cosmic rays
Ion alfvén velocity fluctuations and implications for the diffusion of streaming cosmic rays Open
The interstellar medium (ISM) of star-forming galaxies is magnetized and turbulent. Cosmic rays (CRs) propagate through it, and those with energies from ∼ GeV − TeV are likely subject to the streaming instability, whereby the wave damping …
View article: Cosmic Ray Interstellar Propagation Tool using Itô Calculus (criptic): software for simultaneous calculation of cosmic ray transport and observational signatures
Cosmic Ray Interstellar Propagation Tool using Itô Calculus (criptic): software for simultaneous calculation of cosmic ray transport and observational signatures Open
We present criptic, the Cosmic Ray Interstellar Propagation Tool using Itô Calculus, a new open-source software package to simulate the propagation of cosmic rays through the interstellar medium and to calculate the resulting observable no…
View article: Turbulent diffusion of streaming cosmic rays in compressible, partially ionised plasma
Turbulent diffusion of streaming cosmic rays in compressible, partially ionised plasma Open
Cosmic rays (CRs) are a dynamically important component of the interstellar medium (ISM) of galaxies. The $\sim$GeV CRs that carry most CR energy and pressure are likely confined by self-generated turbulence, leading them to stream along m…
View article: Ion Alfvén velocity fluctuations and implications for the diffusion of streaming cosmic rays
Ion Alfvén velocity fluctuations and implications for the diffusion of streaming cosmic rays Open
The interstellar medium (ISM) of star-forming galaxies is magnetized and turbulent. Cosmic rays (CRs) propagate through it, and those with energies from $\sim\,\rm{GeV} - \rm{TeV}$ are likely subject to the streaming instability, whereby t…
View article: The Impact of Pair-instability Mass Loss on the Binary Black Hole Mass Distribution
The Impact of Pair-instability Mass Loss on the Binary Black Hole Mass Distribution Open
A population of binary black hole mergers has now been observed in gravitational waves by Advanced LIGO and Virgo. The masses of these black holes appear to show evidence for a pileup between 30 and 45 M-circle dot and a cutoff above simil…