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Core-collapse supernovae are sources of powerful gravitational waves (GWs). We assess the possibility of extracting information about the equation of state (EOS) of high density matter from the GW signal. We use the bounce and early…

High Energy Astrophysical Phenomena · Physics 2024-04-09 Ayan Mitra , Daniil Orel , Y. Sultan Abylkairov , Bekdaulet Shukirgaliyev , Ernazar Abdikamalov

Detecting gravitational waves from a nearby core-collapse supernova would place meaningful constraints on the supernova engine and nuclear equation of state. Here we use Convolutional Neural Network models to identify the core rotational…

High Energy Astrophysical Phenomena · Physics 2022-09-22 Yang-Sheng Chao , Chen-Zhi Su , Ting-Yuan Chen , Daw-Wei Wang , Kuo-Chuan Pan

Gravitational waves from core-collapse supernovae offer a unique probe of the equation of state (EOS) of dense nuclear matter. For rapidly rotating stars, previous machine-learning studies demonstrated promising EOS classification accuracy.…

We investigate the potential of using gravitational wave (GW) signals from rotating core-collapse supernovae to probe the equation of state (EOS) of nuclear matter. By generating GW signals from simulations with various EOSs, we train…

High Energy Astrophysical Phenomena · Physics 2025-01-07 Y. Sultan Abylkairov , Matthew C. Edwards , Daniil Orel , Ayan Mitra , Bekdaulet Shukirgaliyev , Ernazar Abdikamalov

Gravitational waves (GWs) generated by axisymmetric rotating collapse, bounce, and early postbounce phases of a galactic core-collapse supernova will be detectable by current-generation gravitational wave observatories. Since these GWs are…

High Energy Astrophysical Phenomena · Physics 2017-04-05 S. Richers , C. D. Ott , E. Abdikamalov , E. O'Connor , C. Sullivan

Gravitational waves from core-collapse supernovae provide a unique probe of the equation of state (EOS) of high density matter. In this work, we focus on the bounce signal from numerical simulations of rotating supernovae and explore its…

Gravitational waves (GWs) provide unobscured insight into the birthplace of neutron stars (NSs) and black holes in core-collapse supernovae (CCSNe). The nuclear equation of state (EOS) describing these dense environments is yet uncertain,…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Oliver Eggenberger Andersen , Shuai Zha , André da Silva Schneider , Aurore Betranhandy , Sean M. Couch , Evan P. O'Connor

Core-collapse supernovae (CCSNe) emit powerful gravitational waves (GWs). Since GWs emitted by a source contain information about the source, observing GWs from CCSNe may allow us to learn more about CCSNs. We study if it is possible to…

High Energy Astrophysical Phenomena · Physics 2023-01-25 Ayan Mitra , Bekdaulet Shukirgaliyev , Y. Sultan Abylkairov , Ernazar Abdikamalov

Recently exploratory studies were performed on the possibility of constraining the neutron star equation of state (EOS) using signals from coalescing binary neutron stars, or neutron star-black hole systems, as they will be seen in upcoming…

General Relativity and Quantum Cosmology · Physics 2015-08-05 Michalis Agathos , Jeroen Meidam , Walter Del Pozzo , Tjonnie G. F. Li , Marco Tompitak , John Veitch , Salvatore Vitale , Chris Van Den Broeck

We present detailed results from performing general relativistic (GR) simulations of stellar core collapse to a proto-neutron star, using a microphysical equation of state (EoS) as well as an approximate description of deleptonization…

We present an analysis of gravitational wave (GW) predictions from five two-dimensional Core Collapse Supernova (CCSN) simulations that varied only in the Equation of State (EOS) implemented. The GW signals from these simulations are used…

Core-collapse supernovae are predicted to produce gravitational waves (GWs) that may be detectable by Advanced LIGO/Virgo. These GW signals carry information from the heart of these catacylsmic events, where matter reaches nuclear…

High Energy Astrophysical Phenomena · Physics 2023-03-31 Noah E. Wolfe , Carla Frohlich , Jonah M. Miller , Alejandro Torres-Forne , Pablo Cerda-Duran

We test deep-learning (DL) techniques for the analysis of rotational core-collapse supernovae (CCSN) gravitational-wave (GW) signals by performing classification and parameter inference of the maximum (peak) frequency and the GW strain…

High Energy Astrophysical Phenomena · Physics 2024-10-07 Solange Nunes , Gabriel Escrig , Osvaldo G. Freitas , José A. Font , Tiago Fernandes , Antonio Onofre , Alejandro Torres-Forné

Core-collapse simulations of massive stars are performed using the equation of state (EOS) based on the microscopic variational calculation with realistic nuclear forces. The progenitor models with the initial masses of $15M_\odot$,…

High Energy Astrophysical Phenomena · Physics 2021-06-30 Ken'ichiro Nakazato , Kohsuke Sumiyoshi , Hajime Togashi

The observation of neutron star mergers with gravitational waves (GWs) has provided a new method to constrain the dense-matter equation of state (EOS) and to better understand its nuclear physics. However, inferring nuclear microphysics…

High Energy Astrophysical Phenomena · Physics 2026-03-20 Brendan T. Reed , Cassandra L. Armstrong , Rahul Somasundaram , Duncan A. Brown , Collin Capano , Soumi De , Ingo Tews

The late collapse, core bounce, and the early postbounce phase of rotating core collapse leads to a characteristic gravitational wave (GW) signal. The precise shape of the signal is governed by the interplay of gravity, rotation, nuclear…

Solar and Stellar Astrophysics · Physics 2014-08-06 Ernazar Abdikamalov , Sarah Gossan , Alexandra M. DeMaio , Christian D. Ott

We demonstrate the application of a convolutional neural network to the gravitational wave signals from core collapse supernovae. Using simulated time series of gravitational wave detectors, we show that based on the explosion mechanisms, a…

High Energy Astrophysical Phenomena · Physics 2020-09-02 Man Leong Chan , Ik Siong Heng , Chris Messenger

Gravitational-wave measurements of the tidal deformability in neutron-star binary coalescences can be used to infer the still unknown equation of state (EoS) of dense matter above the nuclear saturation density. By employing a…

General Relativity and Quantum Cosmology · Physics 2022-03-23 Costantino Pacilio , Andrea Maselli , Margherita Fasano , Paolo Pani

We present results from a new set of 3D general-relativistic hydrodynamic simulations of rotating iron core collapse. We assume octant symmetry and focus on axisymmetric collapse, bounce, the early postbounce evolution, and the associated…

High Energy Astrophysical Phenomena · Physics 2013-05-30 C. D. Ott , E. Abdikamalov , E. O'Connor , C. Reisswig , R. Haas , P. Kalmus , S. Drasco , A. Burrows , E. Schnetter

We have done a series of two-dimensional hydrodynamic simulations of the rotational collapse of a supernova core in axisymmetry. We have employed a realistic equation of state (EOS) and taken into account electron captures and neutrino…

Astrophysics · Physics 2016-08-30 Kei Kotake , Shoichi Yamada , Katsuhiko Sato
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