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New Worlds In black hole physics supports this project Vítor Cardoso (CENTRA/IST) NewWorlds, Lisbon 2012 More at http://blackholes.ist.utl.pt
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BH dynamics PRL 103:131102;103:239001 (2009);105:261102 (2010);107:031101(2011);109:131102(2012) PRD 81:084052; 81:104048; 82:104014(2010); 83:024037;83:104048(2011); arXiv:1209.0773 Barausse, Berti, Gualtieri, Herdeiro, Pretorius, Zilhão, Nerozzi, Okawa, Pani, Sperhake, Witek
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Black holes have no hair One star made of matter and other of antimatter, produce identical BHs. A BH has only three quantities in common with the star which created it: mass, spin and electric charge
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Why study BH dynamics Gravitational-wave detection, GW astrophysics Mathematical physics High-energy physics Particle Physics
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High energy collisions Black holes do form in high energy collisions Transplanckian scattering well described by BH collisions... Matter does not matter Sperhake, Cardoso, Pretorius, Berti, Hinderer, Yunes 2009 Sperhake, Berti, Cardoso, Pretorius, arXiv:1211.6114 Choptuik & Pretorius 2010; East & Pretorius 2012
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Sperhake, Berti, Cardoso & Pretorius, 2012
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Black holes spin slowly Sperhake et al, Phys.Rev.Lett. 103:131102, 2008; 2012 Cosmic Censorship
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Sperhake, Cardoso, Pretorius, Berti, Hinderer, Yunes 2009 Witek et al 2010-2011; Okawa et al 2011
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Sperhake, Cardoso, Pretorius, Berti, Hinderer, Yunes 2009 Witek et al 2010-2011; Okawa et al 2011
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Black holes and matter fields: superradiance Why study dynamics: particle physics
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Black hole bombs Zel’dovich ‘71; Press and Teukolsky ’72; Cardoso et al ‘04
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Nature may provide its own mirrors: AdS boundaries (“covariant box”) Cardoso & Dias ’04 Massive bosons Detweiler ‘80; Cardoso & Yoshida ’05; Dolan ‘07 Interesting as effective description Proxy for more complex interactions Arise as interesting extensions of GR (Brans-Dicke or generic scalar-tensor theories; quadratic f(R)) Axiverse scenarios (moduli and coupling constants in string theory, Peccei-Quinn mechanism in QCD, etc) Arvanitaki et al ‘10
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Full numerical results: are these fits reliable all the way? Pani et al, Phys.Rev.Lett. (2012);Witek et al, in preparation For j=0.99 and =0.4, M. Within factor 2 of slow-rotation fit.
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Proca instability For a 10 million solar mass BH
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Brenneman et al, ApJ736, 103 (2011)
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Depend very mildly on the fit coefficient and on the threshold τ Salpeter → timescale for accretion at the Eddington limit Proca instability
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Black hole dynamics is an important and exciting topic. GW-related physics is quickly being explored, but much to do at other levels, specifically HEP, and superradiance-related: Is Cosmic Censorship vital for our understanding of the universe? Is it preserved? Can we use BHs to tell the underlying gravity theory? Can we “hear” the theory? Much to do at the black hole bomb level: nonlinear development Astrophysics: coupling to matter, can it deffuse the instability? Cardoso et al, PRL107:241101, 2011 Yunes et al PRD81, 084052, 2012
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Thank you
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Witek et al, in preparation
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