articlePhysical review. D/Physical review. D.Oct 21, 2016HYBRID OA

Gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale

VCVítor CardosoSHSeth HopperCFCaio F. B. MacedoCPCarlos PalenzuelaPPPaolo Pani

University of Lisbon · European Organization for Nuclear Research · +5 more institutions

Indexed inarxivcrossref

Abstract

Gravitational waves from binary coalescences provide one of the cleanest signatures of the nature of compact objects. It has been recently argued that the postmerger ringdown waveform of exotic ultracompact objects is initially identical to that of a black hole, and that putative corrections at the horizon scale will appear as secondary pulses after the main burst of radiation. Here we extend this analysis in three important directions: (i) we show that this result applies to a large class of exotic compact objects with a photon sphere for generic orbits in the test-particle limit; (ii) we investigate the late-time ringdown in more detail, showing that it is universally characterized by a modulated and…

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Topics & keywords

Topics
Keywords
  • Physics
  • Gravitational wave
  • Black hole (networking)
  • Photon sphere
  • Boson
  • Binary black hole
  • Compact star
  • Gravitation
UN Sustainable Development Goals
  • Sustainable cities and communities
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