scholarly journals Gravitational waves from axisymmetric rotating stellar core collapse to a neutron star in full general relativity

2004 ◽  
Vol 69 (8) ◽  
Author(s):  
Masaru Shibata ◽  
Yu-ichirou Sekiguchi
Keyword(s):  
General Relativity ◽  
Neutron Star ◽  
Gravitational Waves ◽  
Core Collapse ◽  
Stellar Core

scholarly journals Gravitational Waves from Axisymmetric, Rotating Stellar Core Collapse

2004 ◽  
Vol 600 (2) ◽  
pp. 834-864 ◽  
Author(s):  
Christian D. Ott ◽  
Adam Burrows ◽  
Eli Livne ◽  
Rolf Walder
Keyword(s):  
Gravitational Waves ◽  
Core Collapse ◽  
Stellar Core

scholarly journals Multimessengers from Core-Collapse Supernovae: Multidimensionality as a Key to Bridge Theory and Observation

2012 ◽  
Vol 2012 ◽  
pp. 1-46 ◽  
Author(s):  
Kei Kotake ◽  
Tomoya Takiwaki ◽  
Yudai Suwa ◽  
Wakana Iwakami Nakano ◽  
Shio Kawagoe ◽  
...  
Keyword(s):  
Neutron Star ◽  
Gravitational Waves ◽  
Massive Stars ◽  
Neutrino Flux ◽  
Core Collapse ◽  
Spherically Symmetric ◽  
Hydrodynamic Instabilities ◽  
Important Ingredient ◽  
Hydrodynamic Simulations ◽  
Explosion Mechanism

Core-collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observations of neutrinos emitted by the forming neutron star, and through gravitational waves which are produced when the hydrodynamic flow or the neutrino flux is not perfectly spherically symmetric. The multidimensionality of the supernova engine, which breaks the sphericity of the central core such as convection, rotation, magnetic fields, and hydrodynamic instabilities of the supernova shock, is attracting great attention as the most important ingredient to understand the long-veiled explosion mechanism. Based on our recent work, we summarize properties of gravitational waves, neutrinos, and explosive nucleosynthesis obtained in a series of our multidimensional hydrodynamic simulations and discuss how the mystery of the central engines can be unraveled by deciphering these multimessengers produced under the thick veils of massive stars.

Pan Galactic Gargle Blaster

2019 ◽  
pp. 132-137
Author(s):  
Nicholas Mee
Keyword(s):  
General Relativity ◽  
Neutron Star ◽  
Neutron Stars ◽  
Gravitational Waves ◽  
Gamma Ray ◽  
Great Accuracy ◽  
Gamma Ray Bursts ◽  
Tests Of General Relativity ◽  
Binary Neutron Star

The sources of short gamma ray bursts (GRBs) have been identified with neutron star merger events. Hulse and Taylor discovered the first binary neutron star in 1974. By monitoring the pulsar in this system the orbital characteristics of the system have been determined with great accuracy. This has led to tests of general relativity, including the first confirmation of the existence of gravitational waves. The emission of this radiation is gradually bringing the two neutron stars together. They will collide and merge in about 300 million years.

Cosmic fireworks

2019 ◽  
pp. 508-540
Author(s):  
Nils Andersson
Keyword(s):  
Magnetic Field ◽  
General Relativity ◽  
Neutron Star ◽  
Gravitational Collapse ◽  
State Of The Art ◽  
Core Collapse ◽  
Magnetorotational Instability ◽  
Mode Instability ◽  
Key Issues

The simulation of matter in general relativity, be it for neutron star mergers or core collapse, is discussed. State-of-the-art simulations for the dynamical bar-mode instability and neutron star merges are summarized. The inclusion of magnetic field is considered and key issues like the magnetorotational instability are explored. General gravitational collapse is discussed, and the progress toward the simulations of explosions in core-collapse studies is explained.

Probes of the progenitors, engines and physics behind stellar collapse

2021 ◽  
Author(s):  
Chris L. Fryer
Keyword(s):  
Neutron Star ◽  
Power Source ◽  
Observational Evidence ◽  
Observational Constraints ◽  
Core Collapse ◽  
Stellar Core ◽  
Stellar Collapse ◽  
Current Paradigm ◽  
The Universe

Super-novas (SNs) are one of the most powerful explosions in the universe and astronomers have invoked the collapse of a stellar core down to a neutron star as a potential power source behind these cosmic blasts. The current paradigm behind core-collapse SN relies on convection in the region just above the newly formed neutron star. This engine was driven and confirmed by observations. We review this observational evidence, and the potential for further observational constraints in this paper.

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