Benjamin E. Stahl
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View article: Towards Reliable Objective Evaluation Metrics for Generative Singing Voice Separation Models
Towards Reliable Objective Evaluation Metrics for Generative Singing Voice Separation Models Open
Traditional Blind Source Separation Evaluation (BSS-Eval) metrics were originally designed to evaluate linear audio source separation models based on methods such as time-frequency masking. However, recent generative models may introduce n…
View article: Distillation and Pruning for Scalable Self-Supervised Representation-Based Speech Quality Assessment
Distillation and Pruning for Scalable Self-Supervised Representation-Based Speech Quality Assessment Open
In this paper, we investigate distillation and pruning methods to reduce model size for non-intrusive speech quality assessment based on self-supervised representations. Our experiments build on XLS-R-SQA, a speech quality assessment model…
View article: Leveraging SN Ia spectroscopic similarity to improve the measurement of H <sub>0</sub>
Leveraging SN Ia spectroscopic similarity to improve the measurement of H <sub>0</sub> Open
Recent studies suggest spectroscopic differences explain a fraction of the variation in Type Ia supernova (SN Ia) luminosities after light-curve/color standardization. In this work, (i) we empirically characterize the variations of standar…
View article: Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt
Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt Open
Type Iax supernovae (SNe Iax) are the largest known class of peculiar white dwarf SNe, distinct from normal Type Ia supernovae (SNe Ia). The unique properties of SNe Iax, especially their strong photospheric lines out to extremely late tim…
View article: Leveraging SN Ia spectroscopic similarity to improve the measurement of $H_0$
Leveraging SN Ia spectroscopic similarity to improve the measurement of $H_0$ Open
Recent studies suggest spectroscopic differences explain a fraction of the variation in Type Ia supernova (SN Ia) luminosities after light-curve/color standardization. In this work, (i) we empirically characterize the variations of standar…
View article: What Does the Geometry of the Hβ BLR Depend On?
What Does the Geometry of the Hβ BLR Depend On? Open
We combine our dynamical modeling black-hole mass measurements from the Lick AGN Monitoring Project 2016 sample with measured cross-correlation time lags and line widths to recover individual scale factors, f , used in traditional reverber…
View article: What Does the Virial Coefficient of the \Hb Broad-Line Region Depend On?
What Does the Virial Coefficient of the \Hb Broad-Line Region Depend On? Open
We combine our dynamical modeling black hole mass measurements from the Lick AGN Monitoring Project 2016 sample with measured cross-correlation time lags and line widths to recover individual scale factors, f, used in traditional reverbera…
View article: Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt
Over 500 Days in the Life of the Photosphere of the Type Iax Supernova SN 2014dt Open
Type Iax supernovae (SN Iax) are the largest known class of peculiar white dwarf supernovae, distinct from normal Type Ia supernovae (SN Ia). The unique properties of SN Iax, especially their strong photospheric lines out to extremely late…
View article: Cosmicflows-4
Cosmicflows-4 Open
With Cosmicflows- 4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest numbers coming from the correlations between the photometric and kinematic properties of spiral…
View article: The Pantheon+ Analysis: Cosmological Constraints
The Pantheon+ Analysis: Cosmological Constraints Open
We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26. This work features an increased sample size from th…
View article: The Pantheon+ Analysis: The Full Data Set and Light-curve Release
The Pantheon+ Analysis: The Full Data Set and Light-curve Release Open
Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the Pantheon+ SN analysis and the Supernovae and H 0 for the Equation o…
View article: Cosmicflows-4
Cosmicflows-4 Open
With Cosmicflows-4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest numbers coming from the correlations between the photometric and kinematic properties of spiral …
View article: A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s<sup>−1</sup> Mpc<sup>−1</sup> Uncertainty from the Hubble Space Telescope and the SH0ES Team
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s<sup>−1</sup> Mpc<sup>−1</sup> Uncertainty from the Hubble Space Telescope and the SH0ES Team Open
We report observations from the Hubble Space Telescope (HST) of Cepheid variables in the host galaxies of 42 Type Ia supernovae (SNe Ia) used to calibrate the Hubble constant ( H 0 ). These include the complete sample of all suitable SNe I…
View article: A 5 per cent measurement of the Hubble–Lemaître constant from Type II supernovae
A 5 per cent measurement of the Hubble–Lemaître constant from Type II supernovae Open
The most stringent local measurement of the Hubble–Lemaître constant from Cepheid-calibrated Type Ia supernovae (SNe Ia) differs from the value inferred via the cosmic microwave background radiation (Planck+ΛCDM) by ∼5σ. This so-called Hub…
View article: <tt>PIPS</tt>, an advanced platform for period detection in time series – I. Fourier-likelihood periodogram and application to RR Lyrae stars
PIPS, an advanced platform for period detection in time series – I. Fourier-likelihood periodogram and application to RR Lyrae stars Open
We describe the Period detection and Identification Pipeline Suite (pips) – a new, fast, and statistically robust platform for period detection and analysis of astrophysical time-series data. PIPS is an open-source Python package that prov…
View article: A 22-year history of treating intentional falls from the Golden Gate Bridge at Marin Health Medical Center
A 22-year history of treating intentional falls from the Golden Gate Bridge at Marin Health Medical Center Open
The pattern of injury leading to death after an intentional fall from the Golden Gate Bridge has not changed significantly over the decades.
View article: The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies
The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies Open
We have modeled the velocity-resolved reverberation response of the H β broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitoring Project 2016 sample, drawing inferences on the geometry and struc…
View article: The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies
The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies Open
We have modeled the velocity-resolved reverberation response of the H\b{eta} broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitioring Project 2016 sample, drawing inferences on the geometry and…
View article: The Lick Observatory Supernova Search follow-up program: photometry data release of 70 SESNe
The Lick Observatory Supernova Search follow-up program: photometry data release of 70 SESNe Open
We present BVRI and unfiltered (Clear) light curves of 70 stripped-envelope supernovae (SESNe), observed between 2003 and 2020, from the Lick Observatory Supernova Search follow-up program. Our SESN sample consists of 19 spectroscopically …
View article: The Pantheon+ Analysis: Cosmological Constraints
The Pantheon+ Analysis: Cosmological Constraints Open
We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from $z=0.001$ to 2.26. This work features an increased sample size, increa…
View article: The Lick AGN Monitoring Project 2016: Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies
The Lick AGN Monitoring Project 2016: Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies Open
We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3 m Shane telescope at Lick Observatory from 2016 April to 2017 May. Targeting active galactic nuclei (AGNs) with lumin…
View article: A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team Open
We report observations from HST of Cepheids in the hosts of 42 SNe Ia used to calibrate the Hubble constant (H0). These include all suitable SNe Ia in the last 40 years at z<0.01, measured with >1000 orbits, more than doubling the sample w…
View article: The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
The Pantheon+ Analysis: The Full Dataset and Light-Curve Release Open
Here we present 1701 light curves of 1550 spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the Pantheon+ SN analysis and the SH0ES (Supernovae and H0 for the Equation of …
View article: The Gravity Collective: A Search for the Electromagnetic Counterpart to the Neutron Star–Black Hole Merger GW190814
The Gravity Collective: A Search for the Electromagnetic Counterpart to the Neutron Star–Black Hole Merger GW190814 Open
We present optical follow-up imaging obtained with the Katzman Automatic Imaging Telescope, Las Cumbres Observatory Global Telescope Network, Nickel Telescope, Swope Telescope, and Thacher Telescope of the LIGO/Virgo gravitational wave (GW…
View article: The Lick AGN Monitoring Project 2016: Velocity-Resolved H{\beta} Lags in Luminous Seyfert Galaxies
The Lick AGN Monitoring Project 2016: Velocity-Resolved H{\beta} Lags in Luminous Seyfert Galaxies Open
We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3 m Shane telescope at Lick Observatory from 2016 April to 2017 May. Targeting active galactic nuclei (AGNs) with lumin…
View article: SN 2017fgc: A Fast-expanding Type Ia Supernova Exploded in Massive Shell Galaxy NGC 474
SN 2017fgc: A Fast-expanding Type Ia Supernova Exploded in Massive Shell Galaxy NGC 474 Open
We present extensive optical photometric and spectroscopic observations of the high-velocity (HV) Type Ia supernova (SN Ia) 2017fgc, covering the phase from ∼12 days before to ∼389 days after maximum brightness. SN 2017fgc is similar to no…
View article: PIPS, an advanced platform for period detection in time series -- I. Fourier-likelihood periodogram and application to RR Lyrae Stars
PIPS, an advanced platform for period detection in time series -- I. Fourier-likelihood periodogram and application to RR Lyrae Stars Open
We describe the $\texttt{Period detection and Identification Pipeline Suite}$ ($\texttt{PIPS}$) -- a new, fast, and statistically robust platform for period detection and analysis of astrophysical time-series data. $\texttt{PIPS}$ is an op…
View article: SN 2017fgc: A Fast-Expanding Type Ia Supernova Exploded in Massive Shell\n Galaxy NGC 474
SN 2017fgc: A Fast-Expanding Type Ia Supernova Exploded in Massive Shell\n Galaxy NGC 474 Open
We present extensive optical photometric and spectroscopic observations of\nthe high-velocity (HV) Type Ia supernova (SN Ia) 2017fgc, covering the phase\nfrom $\\sim$ 12 d before to $\\sim 389$ d after maximum brightness. SN 2017fgc is\nsi…
View article: Peculiar-velocity cosmology with Types Ia and II supernovae
Peculiar-velocity cosmology with Types Ia and II supernovae Open
We present the Democratic Samples of Supernovae (DSS), a compilation of 775 low-redshift Type Ia and II supernovae (SNe Ia and II), of which 137 SN Ia distances are derived via the newly developed snapshot distance method. Using the object…
View article: The snapshot distance method: estimating the distance to a Type Ia supernova from minimal observations
The snapshot distance method: estimating the distance to a Type Ia supernova from minimal observations Open
We present the snapshot distance method (SDM), a modern incarnation of a proposed technique for estimating the distance to a Type Ia supernova (SN Ia) from minimal observations. Our method, which has become possible owing to recent work in…