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Detecting the signatures of helium in type Iax supernovae
M. R. Magee, S. A. Sim, R. Kotak +2
Recent studies have argued that the progenitor system of type Iax supernovae must consist of a carbon-oxygen white dwarf accreting from a helium star companion. Based on existing e…
Progenitor candidate for the type II-P supernova SN 2018aoq in NGC 4151
D. O'Neill, R. Kotak, M. Fraser +9
We present our findings based on pre- and post-explosion data of the type II-Plateau SN 2018aoq that exploded in NGC 4151. As distance estimates to NGC 4151 vary by an order of mag…
ALMA, ATCA, and Spitzer Observations of the Luminous Extragalactic Supernova SN 1978K
I. A. Smith, S. D. Ryder, R. Kotak +2
Only three extragalactic supernovae have been detected at late times at millimeter wavelengths: SN 1987A, SN 1978K, and SN 1996cr. SN 1978K is a remarkably luminous Type IIn supern…
A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger
S. Mattila, M. Pérez-Torres, A. Efstathiou +33
Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We have observed a transien…
The Type IIn Supernova 2010bt: The Explosion of a Star in Outburst
N. Elias-Rosa, S. D. Van Dyk, S. Benetti +12
It is well known that massive stars (M > 8 M_sun) evolve up to the collapse of the stellar core, resulting in most cases as a supernova (SN) explosion. Their heterogeneity is relat…
Modelling the early time behaviour of type Ia supernovae: effects of the Ni distribution
M. R. Magee, S. A. Sim, R. Kotak +1
Recent studies have demonstrated the diversity in type Ia supernovae (SNe Ia) at early times and highlighted a need for a better understanding of the explosion physics as manifeste…