The complex circumstellar environment of supernova 2023ixf

EA Zimmerman, I Irani, P Chen, A Gal-Yam, S Schulze… - Nature, 2024 - nature.com
The early evolution of a supernova (SN) can reveal information about the environment and
the progenitor star. When a star explodes in vacuum, the first photons to escape from its …

Circumstellar Interaction in the Ultraviolet Spectra of SN 2023ixf 14–66 Days After Explosion

KA Bostroem, DJ Sand, L Dessart… - The Astrophysical …, 2024 - iopscience.iop.org
SN 2023ixf was discovered in M101 within a day of the explosion and rapidly classified as a
Type II supernova with flash features. Here we present ultraviolet (UV) spectra obtained with …

The Early Ultraviolet Light Curves of Type II Supernovae and the Radii of Their Progenitor Stars

I Irani, J Morag, A Gal-Yam, E Waxman… - The Astrophysical …, 2024 - iopscience.iop.org
We present a sample of 34 normal Type II supernovae (SNe II) detected with the Zwicky
Transient Facility, with multiband UV light curves starting at t≤ 4 days after explosion, and X …

No rungs attached: A distance-ladder free determination of the Hubble constant through type II supernova spectral modelling

C Vogl, S Taubenberger, G Csörnyei… - arXiv preprint arXiv …, 2024 - arxiv.org
The ongoing discrepancy in the Hubble constant ($ H_0 $) estimates obtained through local
distance ladder methods and early universe observations poses a significant challenge to …