Conveners
Theory: Contributed Presentations 1
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Theory: Contributed Presentations 2
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Theory: Discussion
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Theory: Lecture 2
- Bernhard Mueller (Monash University)
Theory: Lecture 1
- Bernhard Mueller (Monash University)
The gravitational collapse of massive stars can lead to extreme stellar explosions when both fast rotation and strong magnetic fields are present during the onset of the supernova. A detailed understanding of how magnetic fields extract angular momentum from the central proto-neutron star is paramount to produce quantitative predictions with respect to not only the explosion dynamics, but also...
Simulations of astrophysical systems where neutrinos play a significant role, like core-collapse supernovae, would ideally solve the neutrino transport equation fully, i.e. solve the full Boltzmann equation. Because of its very high computational cost (6+1D), simulations generally rely on approximations of the equation that are more affordable. It is however difficult to estimate what is lost...
Collective neutrino oscillation induced by neutrino self-interaction has been brought great attention in theoretical CCSN modeling.
Especially fast flavor conversion (FFC), which is caused by angular crossings in momentum space, is expected to affect CCSN dynamics.
However, including FFC effects into CCSN simulation is challenging because (1) FFC depends on momentum space angle distribution,...
The low-frequency contribution to gravitational wave signals from core-collapse supernovae has often been overlooked due to the rapid increase in the LIGO noise floor at 10 Hz, but recent studies have illuminated the rich content of core-collapse supernova gravitational wave emission in this frequency range and the exciting prospects for its detection. Here, I will present a brief review of...
Detection of gravitational wave emissions from a nearby core-collapse supernova explosion would mark the next milestone in gravitational wave astrophysics and multi-messenger astronomy, although the nature of the supernova explosion engine remains elusive. One possible engine is through the magneto-rotational mechanism, which may power extreme phenomena such as hypernovae and long gamma-ray...
Multi-messenger signals of gravitational waves and neutrinos from supernovae carry information about properties of supernova cores, which cannot be directly observed with electromagnetic waves. To maximize impacts of future detection of these multi-messenger signals, it is important to understand the relationship between the characteristics of the multi-messenger signals and the properties of...
High-energy astrophysical events, such as core-collapse supernovae and binary neutron-star mergers, are promising sources of detectable gravitational waves. In these extremely dense environments, neutrino transport plays a crucial role in shaping the dynamics and observables. However, most numerical models to date employ classical neutrino transport, neglecting quantum kinetic effects. In...
Gravitational waves offer a direct way to probe the explosion mechanism of core-collapse supernovae and proto-neutron star turbulence. By combining state-of-the-art 3D-MHD convection simulations with physics-informed scaling laws, we generate synthetic GW spectrograms up to 7 seconds post-bounce—much longer than what is typically achieved with global core-collapse models. We examine how the GW...
Certain features of the gravitational wave spectrogram from core-collapse supernovae are the imprint of excited oscillation modes of the dense proto-compact star, excited by various manifestations of asymmetric fluid motion. One of the most robust signal components arises from a quadrupolar f/g-mode whose frequency increases from a few hundred Hz to above 1 kHz. In addition, another distinct...
After decades of intense research, the "neutrino-driven explosion mechanism" has meanwhile been established as the most promising and widely accepted paradigm for the majority of core-collapse supernovae (CCSNe). Nevertheless, the question remained whether the neutrino-driven mechanism can explain the characteristic properties of observed supernovae, such as explosion energies, nucleosynthesis...
