5 papers
Simulating observed point-symmetric core-collapse supernova morphologies with the jittering jets explosion mechanism
Jessica Braudo, Amir Michaelis, Muhammad Akashi +1
We conduct two three-dimensional hydrodynamic simulations of the jittering-jets explosion mechanism (JJEM) of core-collapse supernova (CCSN), launching three pairs of inclined oppo…
Quantifying Symmetry: Transformation Information for Planetary Nebulae and Supernova Remnants
Dmitry Shishkin, Amir Michaelis
We present a quantitative symmetry-identification pipeline for astrophysical images based on Transformation Information (TI), an information measure of self-similarity under geomet…
Helium Accumulation and Thermonuclear Instabilities on Accreting White Dwarfs: From Recurring Helium Novae to Type Ia Supernovae
Yael Hillman, Amir Michaelis, Hagai B. Perets
We investigate helium accumulation on carbon-oxygen (CO) white dwarfs (WDs), exploring a broad parameter space of initial WD masses (--) and helium accretion ra…
It's always the quiet ones: Single Degenerate Double Detonation Type Ia Supernova from Quiescent Helium Accretion
Amir Michaelis, Yael Hillman, Hagai B. Perets
We investigate a sub-Chandrasekhar mass double detonation pathway for Type Ia supernovae arising from single degenerate helium accreting carbon-oxygen white dwarfs. Building on our…
The Single-Degenerate Channel Leads to Type Iax and Not Type Ia Supernovae due to Premature Ignition
Amir Michaelis, Hagai B. Perets
Type Ia supernovae (SNe Ia) are a critical tool for cosmology and galactic enrichment, yet the progenitor systems of normal SNe Ia remain a central puzzle. The long-debated single-…