Conveners
Thursday - Session 3: Explosive Stellar Objects and Nuclear Physics - Supernovae
- Kei Kotake (Fukuoka University)
Axion-like particles (ALPs) are a class of hypothetical bosons which feebly interact with ordinary matter. The hot plasma of stars and core-collapse supernovae is a possible laboratory to explore physics beyond the standard model including ALPs. Once produced in a supernova, some of the ALPs can be absorbed by the supernova matter and affect energy transfer. We recently calculated the ALP...
Strong magnetic fields could exist in the inner region of the explosive astrophysical site such as MHD-Jet SNe. The phase space of the electrons is quantized inside the magnetic field so that the weak interaction rates deviate from the field-free case. This talk focuses on the (anti)neutrinos absorption process. This process is essential since it determines the opacity of neutrino and the...
Systematic studies of core-collapse supernovae have been conducted based on hundreds of one-dimensional artificial models (O'Connor & Ott 2011,2013; Ugliano et al. 2013, Ertl et al. 2015) and two-dimensional self-consistent simulations (Nakamura et al. 2015;2019, Burrows & Vartanyan 2020). We have performed three-dimensional core-collapse simulations for 16 progenitor models covering ZAMS mass...
A large number of neutrinos emitted in a supernova explosion interacts with a dense plasma. The interaction between neutrinos and electrons changes the neutrino oscillation probability remarkably at the specific electron density, known as the Mikheyev–Smirnov–Wolfenstein (MSW) resonance effect. Previous studies for the neutrino process in core-collapsing supernova (CCSN) have well established...
In one of the most promising supernova theories, neutrino-heating mechanism, neutrinos carry the majority of the energy released during the gravitational collapse of massive stars. If neutrino flavors are converted fast in the cores, by depositing energy, they can rejuvenate stalled bounce shocks and provide the energy for supernova explosions. In this talk, I will present the results of our...
