Conveners
Detection: Contributed Presentations 1
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Detection: Contributed Presentations 2
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Detection: Contributed Presentations 3
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Detection: Contributed Presentations 4
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Detection: Contributed Presentations 5
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Detection: Lecture 1
- Michele Zanolin (Embry Riddle Aeronautical University)
Detection: Discussion
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Detection: Lecture 2
- Michele Zanolin (Embry Riddle Aeronautical University)
The yet-to-be-detected gravitational wave signal from core-collapse supernovae is expected to be dominated by oscillation modes of the newly born proto-neutron star (PNS). I am going to present a new general relativistic framework for computing the oscillation modes of a PNS, including, for the first time, an accretion flow and a surrounding stalled accretion shock. The oscillations can be...
Galactic (or near Galactic) core-collapse supernova (CCSN) is currently one of the most anticipated astrophysical events of the century. CCSN are multimessenger astronomy events that work as exceptional laboratories enclosing different carriers of physical information, neutrinos, photons, and gravitational waves (GWs) all coexisting in a single event. The CCSN GW signals are characterized by a...
Calibration of gravitational wave detectors is an intricate and critical process, with amplitude and phase uncertainties typically at the percent level. These calibration uncertainties, which vary with frequency, are routinely incorporated into compact binary coalescence parameter estimation. However, their influence on burst searches and supernova parameter estimation is less explored. In...
In this study, we formulate and describe a method for estimating parameters for rotating core-collapse supernovae, using the gravitational wave core bounce phase as a basis.
We introduce an analytical framework for the core bounce component that is determined by the ratio β, which characterizes the relationship between rotational kinetic energy and potential energy, alongside a...
Core-collapse supernovae stand out as key multi-messenger candidates to probe the internal dynamics of stellar supernova explosions with gravitational waves, light, and neutrinos. These complex processes have motivated multiple efforts to simulate core-collapse supernovae and predict the observational signatures with different simulation and progenitor parameters. In order to develop a...
Gravitational-wave (GW) emissions from core-collapse supernovae (CCSNe) provide insights into the internal processes leading up to their explosions. Theory predicts that CCSN explosions are driven by hydrodynamical instabilities like the standing accretion shock instability or neutrino-driven convection, and simulations show that these mechanisms emit GWs at low frequencies ($\lesssim 250 $...
The goal of the project is to investigate the potential of different distributional methods in the detection of Core-Collapse supernova gravitational waves (GW) for quiet signals that would have been previously missed. To date, no supernova GW detections have been made. We use coherent WaveBurst to look at the loudest events in a span of time and form a metric for each event, which we collect...
Till date ~200 compact binaries have been detected with the current gravitational wave (GW) detectors. This number is expected to increase by orders of magnitude in the 3G detector era.
In Singh et al 2020 and 2024, we have shown that with just ET as a single instrument, the mass distributions and the merger rate densities of compact binaries will have much better constraints.
The...
One of the major uncertainties in core-collapse supernova phenomenology lies in the equation of state at high densities. Of particular interest is the possibility of a first-order phase transition from hadronic matter to deconfined quark matter—a topic that has recently gained attention due to its potential observational signatures in neutrinos and gravitational waves [1–7]. In this talk, I...
A novel functional form for fitting neutrino luminosities from
core-collapse supernovae was recently proposed by Lucente et al. (2024),
capturing the effects of convection inside the proto-neutron star (PNS)
through a power-law temporal decay. While this model accurately
describes the cooling phase, it does not account for the neutrino flux
during, approximately, the first second, which...
In this work we use an analytical model that fits the Core-Bounce phase of Core Collapse Supernovae and it depends upon one physical parameter (the rotational rate) and two more phenomenological ones, which adjust the waveform to a Richers catalog of 2D axisymmetric simulations. Three different scenarios were considered in this work. The first one aims to test Markov Chain – Monte Carlo...
Gravitational waveforms arising from core-collapse supernova are yet to be observed by the existing detectors. Simulating GW waveforms for CCSN consumes a considerable number of resources. In this work we have employed the advantage of a machine learning technique, specifically conditional variational autoencoder to generate the waveforms of the CCSN. For training, publicly available...
Core-collapse supernovae are the most promising astrophysical sources of burst gravitational waves for current and next-generation interferometric detectors. In the post-bounce phase of CCSNe, the Standing Accretion Shock Instability (SASI) plays a crucial role in the explosion mechanism, generating distinctive, quasi-periodic gravitational wave signatures. Accurate detection and...
The use of Artificial Intelligence (AI), Machine Learning (ML), and High-Performance Computing (HPC) is playing an increasingly important role in advancing how we detect gravitational waves (GW).GW signals from core-collapse supernovae (CCSN) are still undetected. These signals are inherently weak, unmodeled and often masked by environmental and instrumental noise, presenting significant...
Gravitational waves from core-collapse supernovae remain one of the most promising, but as yet undetected, sources for LIGO, Virgo, and KAGRA. Confidently reconstructing a supernova waveform, or inferring key signal properties, could provide critical insight into the explosion mechanism. This task remains challenging however due to the wide range of possible signal morphologies. In this talk,...
