scholarly journals Black hole - neutron star binary mergers: the imprint of tidal deformations and debris

Author(s):  
Bhavesh Khamesra ◽  
Miguel Gracia-Linares ◽  
Pablo Laguna
2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Tomas Andrade ◽  
Christiana Pantelidou ◽  
Julian Sonner ◽  
Benjamin Withers

Abstract General relativity governs the nonlinear dynamics of spacetime, including black holes and their event horizons. We demonstrate that forced black hole horizons exhibit statistically steady turbulent spacetime dynamics consistent with Kolmogorov’s theory of 1941. As a proof of principle we focus on black holes in asymptotically anti-de Sitter spacetimes in a large number of dimensions, where greater analytic control is gained. We focus on cases where the effective horizon dynamics is restricted to 2+1 dimensions. We also demonstrate that tidal deformations of the horizon induce turbulent dynamics. When set in motion relative to the horizon a deformation develops a turbulent spacetime wake, indicating that turbulent spacetime dynamics may play a role in binary mergers and other strong-field phenomena.


Author(s):  
Nils Andersson

This chapter provides a brief survey of gravitational-wave astronomy, including the recent recent breakthrough detection. It sets the stage for the rest of the book via simple back-of-the-envelope estimates for different sets of sources. The chapter also describes the first detection of a black hole merger (GW150914) as well as the first observed neutron star binary event (GW170817) and introduces some of the ideas required to understand these breakthroughs.


2006 ◽  
Author(s):  
Joshua A. Faber ◽  
Thomas W. Baumgarte ◽  
Stuart L. Shapiro ◽  
Keisuke Taniguchi ◽  
Frederic A. Rasio

2017 ◽  
Vol 844 (2) ◽  
pp. L19 ◽  
Author(s):  
Anthony L. Piro ◽  
Bruno Giacomazzo ◽  
Rosalba Perna

2018 ◽  
Vol 97 (8) ◽  
Author(s):  
Fatemeh Hossein Nouri ◽  
Matthew D. Duez ◽  
Francois Foucart ◽  
M. Brett Deaton ◽  
Roland Haas ◽  
...  

2004 ◽  
Vol 194 ◽  
pp. 204-204
Author(s):  
J. I. González-Hernández ◽  
R. Rebolo ◽  
G. Israelian ◽  
J. Casares

We have determined abundances in the secondary stars of the black hole X-ray binary A0620-00 and the neutron star Binary Cen X-4. These are K type stars veiled by the emission produced by the respective accretion discs. We searched for evidence of nucleosynthetic products from the progenitor of the compact object that could have contaminated the secondary stars (as in Israelian et al., 1999).Using high resolution spectra obtained with VLT/UVES, we have derived in a consistent way stellar parameters and the veiling caused by the accretion disc.


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