186 citations · 928 across the 35 of their papers we have counts for
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Peak 'Nebular' Emission and Early Flux Excesses in Ca-strong Supernovae
C. -G. Touchard-Paxton, K. Maguire, C. Frohmaier +27
Calcium-strong supernovae (Ca-strong SNe) are a class of thermonuclear transient characterised by rapid photometric evolution (rise times of <= 16 d) and nebular-phase spectra domi…
The Enigmatic Type Icn Supernova 2024abvb Located ~22 kpc from Its Host Galaxy
J. Shi, K. Auchettl, W. B. Hoogendam +29
We report multiwavelength observations of the highly offset (~22.4 kpc) SN 2024abvb, the sixth Type Icn supernova to date. With a peak magnitude of Mr = -19.55 +/- 0.11 mag, it is…
JWST Spectroscopy of SN Ia 2022aaiq and 2024gy: Evidence for Enhanced Central Stable Ni Abundance and a Deflagration-to-Detonation Transition
Lindsey A. Kwok, Chang Liu, Saurabh W. Jha +48
We present optical + near-infrared (NIR) + mid-infrared (MIR) observations of the normal Type Ia supernovae (SN Ia) 2022aaiq and 2024gy in the nebular phase, continuously spanning…
Radiative Transfer Modeling of Stripped-Envelope Supernovae. I: A Grid for Ejecta Parameter Inference
S. Karthik Yadavalli, V. Ashley Villar, Abigail Polin +3
We present 1,800 multiwavelength Type Ib/c supernovae light curve models obtained by running the radiation transport code Sedona and varying the mass distribution, velocity profile…
JWST and Ground-based Observations of the Type Iax Supernovae SN 2024pxl and SN 2024vjm: Evidence for Weak Deflagration Explosions
Lindsey A. Kwok, Mridweeka Singh, Saurabh W. Jha +89
We present panchromatic optical near-infrared (NIR) mid-infrared (MIR) observations of the intermediate-luminosity Type Iax supernova (SN Iax) 2024pxl and the extremely low…
Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae
Mridweeka Singh, Lindsey A. Kwok, Saurabh W. Jha +90
We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ($M_V = -16.81…
SN 2023xwi: Forbidden line emission in the peak spectrum of a Ca-strong transient
C. -G. Touchard-Paxton, C. Frohmaier, M. Pursiainen +7
We present an extensive optical photometric and spectroscopic investigation into the calcium-rich supernova (SN) - SN2023xwi. Observations from a variety of ground-based telescopes…
Discovery and Follow-up of ASASSN-23bd (AT 2023clx): The Lowest Redshift and Least Luminous Tidal Disruption Event To Date
W. B. Hoogendam, J. T. Hinkle, B. J. Shappee +23
We report the All-Sky Automated Survey for SuperNovae discovery of the tidal disruption event (TDE) ASASSN-23bd (AT 2023clx) in NGC 3799, a LINER galaxy with no evidence of strong…
Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq
Jeniveve Pearson, David J. Sand, Peter Lundqvist +85
We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining type Ia supernova (SN Ia) in NGC 1784 ( Mpc),…
SN 2021gno: a Calcium-rich transient with double-peaked light curves
K. Ertini, G. Folatelli, L. Martinez +52
We present extensive ultraviolet (UV) and optical photometric and optical spectroscopic follow-up of supernova (SN)~2021gno by the "Precision Observations of Infant Supernova Explo…
Characterizing the Rapid Hydrogen Disappearance in SN2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties
Yize Dong, Stefano Valenti, Chris Ashall +52
We present optical and near-infrared observations of SN~2022crv, a stripped envelope supernova in NGC~3054, discovered within 12 hrs of explosion by the Distance Less Than 40 Mpc S…
Sensitivity of Simulations of Double Detonation Type Ia Supernova to Integration Methodology
Michael Zingale, Zhi Chen, Melissa Rasmussen +4
We study the coupling of hydrodynamics and reactions in simulations of the double detonation model for Type Ia supernovae. When assessing the convergence of simulations, the focus…
Ground-based and JWST Observations of SN 2022pul: I. Unusual Signatures of Carbon, Oxygen, and Circumstellar Interaction in a Peculiar Type Ia Supernova
Matthew R. Siebert, Lindsey A. Kwok, Joel Johansson +79
Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important constraints on progenitor scenarios and explosion dynamics for both these rare SNe and the more…
Ground-based and JWST Observations of SN 2022pul: II. Evidence from Nebular Spectroscopy for a Violent Merger in a Peculiar Type-Ia Supernova
Lindsey A. Kwok, Matthew R. Siebert, Joel Johansson +78
We present an analysis of ground-based and JWST observations of SN~2022pul, a peculiar "03fg-like" (or "super-Chandrasekhar") Type Ia supernova (SN Ia), in the nebular phase at 338…
A 3D Numerical Study of Anisotropies in Supernova Remnants
Soham Mandal, Paul C. Duffell, Abigail Polin +1
We develop a suite of 3D hydrodynamic models of supernova remnants (SNRs) expanding against the circumstellar medium (CSM). We study the Rayleigh-Taylor Instability (RTI) forming a…
Flight of the Bumblebee: the Early Excess Flux of Type Ia Supernova 2023bee revealed by , and Young Supernova Experiment Observations
Qinan Wang, Armin Rest, Georgios Dimitriadis +41
We present high-cadence ultraviolet through near-infrared observations of the Type Ia supernova (SN Ia) 2023bee in NGC~2708 ( Mpc), finding excess flux in the first d…
Fast and Not-so-Furious: Case Study of the Fast and Faint Type IIb SN 2021bxu
Dhvanil D. Desai, Chris Ashall, Benjamin J. Shappee +36
We present photometric and spectroscopic observations and analysis of SN 2021bxu (ATLAS21dov), a low-luminosity, fast-evolving Type IIb supernova (SN). SN 2021bxu is unique, showin…
SN 2021zny: an early flux excess combined with late-time oxygen emission suggests a double white dwarf merger event
Georgios Dimitriadis, Kate Maguire, Viraj R. Karambelkar +28
We present a photometric and spectroscopic analysis of the ultra-luminous and slowly evolving 03fg-like Type Ia SN 2021zny. Our observational campaign starts from hours a…
Probing the low-mass end of core-collapse supernovae using a sample of strongly-stripped Calcium-rich Type IIb Supernovae from the Zwicky Transient Facility
Kaustav K. Das, Mansi M. Kasliwal, Christoffer Fremling +23
The fate of stars in the zero-age main-sequence (ZAMS) range Msun is unclear. They could evolve to form white dwarfs or explode as electron-capture supernovae (SNe)…
The Absolute Magnitudes of 1991T-like Supernovae
M. M. Phillips, C. Ashall, Christopher R. Burns +20
1991T-like supernovae are the luminous, slow-declining extreme of the Branch shallow-silicon (SS) subclass of Type Ia supernovae. They are distinguished by extremely weak Ca II H &…
SN 2020jgb: A Peculiar Type Ia Supernova Triggered by a Helium-Shell Detonation in a Star-Forming Galaxy
Chang Liu, Adam A. Miller, Abigail Polin +25
The detonation of a thin () helium shell (He-shell) atop a white dwarf (WD) is a promising mechanism to explain normal…
Using Anisotropies as a Forensic Tool for Decoding Supernova Remnants
Abigail Polin, Paul Duffell, Dan Milisavljevic
We present a method for analyzing supernova remnants (SNRs) by diagnosing the drivers responsible for structure at different angular scales. First, we perform a suite of hydrodynam…
Infant-phase reddening by surface Fe-peak elements in a normal Type Ia Supernova
Yuan Qi Ni, Dae-Sik Moon, Maria R. Drout +41
Type Ia Supernovae are thermonuclear explosions of white dwarf stars. They play a central role in the chemical evolution of the Universe and are an important measure of cosmologica…
Physical Properties of the Host Galaxies of Ca-rich Transients
Y. Dong, D. Milisavljevic, J. Leja +8
Calcium-rich (Ca-rich) transients are a new class of supernovae (SNe) that are known for their comparatively rapid evolution, modest peak luminosities, and strong nebular calcium e…