Almost All Carbon/Oxygen White Dwarfs Can Host Double Detonations

KJ Shen, SJ Boos, DM Townsley - The Astrophysical Journal, 2024 - iopscience.iop.org
Double detonations of sub-Chandrasekhar-mass white dwarfs (WDs) in unstably mass-
transferring double WD binaries have become one of the leading contenders to explain most …

Keck Infrared Transient Survey. I. Survey Description and Data Release 1

S Tinyanont, RJ Foley, K Taggart… - Publications of the …, 2024 - iopscience.iop.org
Abstract We present the Keck Infrared Transient Survey, a NASA Key Strategic Mission
Support program to obtain near-infrared (NIR) spectra of astrophysical transients of all types …

Ground-based and JWST Observations of SN 2022pul. II. Evidence from Nebular Spectroscopy for a Violent Merger in a Peculiar Type Ia Supernova

LA Kwok, MR Siebert, J Johansson… - The Astrophysical …, 2024 - iopscience.iop.org
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 …

Early-Time Observations of SN 2023wrk: A Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

J Liu, X Wang, C Andrade, PA Duverne… - The Astrophysical …, 2024 - iopscience.iop.org
We present extensive photometric and spectroscopic observations of the nearby Type Ia
supernova (SN) 2023wrk at a distance of about 40 Mpc. The earliest detection of this SN can …

The aspherical explosions of the 03fg-like Type Ia supernovae 2021zny and 2022ilv revealed by polarimetry

T Nagao, K Maeda, S Mattila, H Kuncarayakti… - Astronomy & …, 2024 - aanda.org
Context. A peculiar subtype of Type Ia supernovae (SNe), 03fg-like (super-Chandrasekhar)
SNe, show different observational properties from prototypical Type Ia SNe: they typically …

Abundance stratification in type Ia supernovae–VII. The peculiar, C-rich iPTF16abc: highlighting diversity among luminous events

CJ Aouad, PA Mazzali, C Ashall… - Monthly Notices of …, 2024 - academic.oup.com
ABSTRACT Observations of Type Ia supernovae (SNe Ia) reveal diversity, even within
assumed subcategories. Here, the composition of the peculiar iPTF16abc (SN 2016bln) is …

Type Ia supernova explosion models are inherently multidimensional

R Pakmor, IR Seitenzahl, AJ Ruiter, SA Sim… - Astronomy & …, 2024 - aanda.org
Theoretical and observational approaches to settling the important questions surrounding
the progenitor systems and the explosion mechanism of normal Type Ia supernovae have …

High γ-ray escape time in 2003fg-like supernovae: a challenge to proposed models

A Sharon, D Kushnir… - Monthly Notices of the …, 2024 - academic.oup.com
ABSTRACT A rare subclass of Type Ia supernovae (SNe Ia), named after the prototype SN
2003fg, includes some of the brightest SNe Ia, often called 'super Chandrasekhar-mass' …

From out of the Blue: Swift Links 2002es-like, 2003fg-like, and Early Time Bump Type Ia Supernovae

WB Hoogendam, BJ Shappee, PJ Brown… - The Astrophysical …, 2024 - iopscience.iop.org
We collect a sample of 42 Type Ia supernovae (SNe Ia) with Swift UV photometry and well-
measured early time light-curve rises and find that 2002es-like and 2003fg-like SNe Ia have …

A JWST Medium Resolution MIRI Spectrum and Models of the Type Ia supernova 2021aefx at+ 415 d

C Ashall, P Hoeflich, E Baron, M Shahbandeh… - arXiv preprint arXiv …, 2024 - arxiv.org
We present a JWST MIRI/MRS spectrum (5-27$\mathrm {\mu} $ m) of the Type Ia supernova
(SN Ia), SN 2021aefx at $+ 415$ days past $ B $-band maximum. The spectrum, which was …