Browsing Department of Materials Science and Metallurgy by Subject "black holes"

Now showing items 1-5 of 5

  • Dimensional reduction in numerical relativity: Modified cartoon formalism and regularization 

    Cook, William G; Figueras, Pau; Kunesch, Markus; Sperhake, Ulrich; Tunyasuvunakool, Saran (World Scientific Publishing CompanyInternational Journal of Modern Physics D, 2016-06-01)
    We present in detail the Einstein equations in the Baumgarte–Shapiro–Shibata–Nakamura formulation for the case of D-dimensional spacetimes with SO(D−d)isometry based on a method originally introduced in Ref. 1. Regularized ...

  • Instability of supersymmetric microstate geometries 

    Eperon, Felicity C; Reall, Harvey Stephen; Santos, Jorge Eduardo (SpringerJournal of High Energy Physics, 2016-10-07)
    We investigate the classical stability of supersymmetric, asymptotically flat, microstate geometries with five non-compact dimensions. Such geometries admit an “evanescent ergosurface”: a timelike hypersurface of infinite ...

  • Is there a breakdown of effective field theory at the horizon of an extremal black hole? 

    Hadar, S; Reall, Harvey Stephen
    © 2017, The Author(s). Linear perturbations of extremal black holes exhibit the Aretakis instability, in which higher derivatives of a scalar field grow polynomially with time along the event horizon. This suggests that ...

  • Numerical Relativity and High Energy Physics: Recent Developments 

    Berti, Emanuele; Cardoso, Vitor; Crispino, Luis CB; Gualtieri, Leonardo; Herdeiro, Carlos; Sperhake, Ulrich (World ScientificInternational Journal of Modern Physics D, 2016-07-15)
    We review recent progress in the application of numerical relativity techniques to astrophysics and high-energy physics. We focus on recent developments regarding the spin evolution in black hole binaries, high-energy black ...

  • On the equal-mass limit of precessing black-hole binaries 

    Gerosa, D; Sperhake, Ulrich; Vošmera, J (Institute of PhysicsClassical and Quantum Gravity, 2017-03-23)
    We analyze the inspiral dynamics of equal-mass precessing black-hole binaries using multi-timescale techniques. The orbit-averaged post-Newtonian evolutionary equations admit two constants of motion in the equal-mass limit, ...