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Monte Carlo radiative transfer for the nebular phase of Type Ia supernovae
L. J. Shingles, S. A. Sim, M. Kromer +9
We extend the range of validity of the ARTIS 3D radiative transfer code up to hundreds of days after explosion, when Type Ia supernovae are in their nebular phase. To achieve this,…
A year-long plateau in the late-time near-infrared light curves of Type Ia supernovae
Or Graur, Kate Maguire, Russell Ryan +6
The light curves of Type Ia supernovae are routinely used to constrain cosmology models. Driven by radioactive decay of 56Ni, the light curves steadily decline over time, but >150…
A Supernova Remnant Counterpart for HESS J1832-085
Nigel I. Maxted, M. D. Filipovic, N. Hurley-Walker +18
We examine the new Galactic supernova remnant (SNR) candidate, G23.11+0.18, as seen by the Murchison Widefield Array (MWA) radio telescope. We describe the morphology of the candid…
Optical tomography of chemical elements synthesized in Type Ia supernovae
Ivo R. Seitenzahl, Parviz Ghavamian, J. Martin Laming +1
We report the discovery of optical emission from the non-radiative shocked ejecta of three young Type Ia supernova remnants (SNRs): SNR 0519-69.0, SNR 0509-67.5, and N103B. Deep in…
SN1991bg-like supernovae are associated with old stellar populations
Fiona H. Panther, Ivo R. Seitenzahl, Ashley J. Ruiter +5
SN1991bg-like supernovae are a distinct subclass of thermonuclear supernovae (SNe Ia). Their spectral and photometric peculiarities indicate their progenitors and explosion mechani…
From the supernova to the supernova remnant: the three-dimensional imprint of a thermonuclear explosion
Gilles Ferrand, Donald C. Warren, Masaomi Ono +3
Recent progress in the three-dimensional modeling of supernovae (SN) has shown the importance of asymmetries for the explosion. This calls for a reconsideration of the modeling of…