Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?

Research output: Contribution to journal › Letter › Research › peer-review

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Is the Gravitational-Wave Ringdown a Probe of the Event Horizon? / Cardoso, Vitor; Franzin, Edgardo; Pani, Paolo.

In: Physical Review Letters, Vol. 116, No. 17, 171101, 27.04.2016.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Cardoso, V, Franzin, E & Pani, P 2016, 'Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?', Physical Review Letters, vol. 116, no. 17, 171101. https://doi.org/10.1103/PhysRevLett.116.171101

APA

Cardoso, V., Franzin, E., & Pani, P. (2016). Is the Gravitational-Wave Ringdown a Probe of the Event Horizon? Physical Review Letters, 116(17), [171101]. https://doi.org/10.1103/PhysRevLett.116.171101

Vancouver

Cardoso V, Franzin E, Pani P. Is the Gravitational-Wave Ringdown a Probe of the Event Horizon? Physical Review Letters. 2016 Apr 27;116(17). 171101. https://doi.org/10.1103/PhysRevLett.116.171101

Author

Cardoso, Vitor ; Franzin, Edgardo ; Pani, Paolo. / Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?. In: Physical Review Letters. 2016 ; Vol. 116, No. 17.

Bibtex

@article{505753e784fb4aec9ad732598c74afe5,
title = "Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?",
abstract = "It is commonly believed that the ringdown signal from a binary coalescence provides a conclusive proof for the formation of an event horizon after the merger. This expectation is based on the assumption that the ringdown waveform at intermediate times is dominated by the quasinormal modes of the final object. We point out that this assumption should be taken with great care, and that very compact objects with a light ring will display a similar ringdown stage, even when their quasinormal-mode spectrum is completely different from that of a black hole. In other words, universal ringdown waveforms indicate the presence of light rings, rather than of horizons. Only precision observations of the late-time ringdown signal, where the differences in the quasinormal-mode spectrum eventually show up, can be used to rule out exotic alternatives to black holes and to test quantum effects at the horizon scale.",
keywords = "QUASI-NORMAL MODES, BLACK-HOLES, NONRADIAL OSCILLATIONS, ASTROPHYSICS, STAR",
author = "Vitor Cardoso and Edgardo Franzin and Paolo Pani",
year = "2016",
month = apr,
day = "27",
doi = "10.1103/PhysRevLett.116.171101",
language = "English",
volume = "116",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",

}

RIS

TY - JOUR

T1 - Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?

AU - Cardoso, Vitor

AU - Franzin, Edgardo

AU - Pani, Paolo

PY - 2016/4/27

Y1 - 2016/4/27

N2 - It is commonly believed that the ringdown signal from a binary coalescence provides a conclusive proof for the formation of an event horizon after the merger. This expectation is based on the assumption that the ringdown waveform at intermediate times is dominated by the quasinormal modes of the final object. We point out that this assumption should be taken with great care, and that very compact objects with a light ring will display a similar ringdown stage, even when their quasinormal-mode spectrum is completely different from that of a black hole. In other words, universal ringdown waveforms indicate the presence of light rings, rather than of horizons. Only precision observations of the late-time ringdown signal, where the differences in the quasinormal-mode spectrum eventually show up, can be used to rule out exotic alternatives to black holes and to test quantum effects at the horizon scale.

AB - It is commonly believed that the ringdown signal from a binary coalescence provides a conclusive proof for the formation of an event horizon after the merger. This expectation is based on the assumption that the ringdown waveform at intermediate times is dominated by the quasinormal modes of the final object. We point out that this assumption should be taken with great care, and that very compact objects with a light ring will display a similar ringdown stage, even when their quasinormal-mode spectrum is completely different from that of a black hole. In other words, universal ringdown waveforms indicate the presence of light rings, rather than of horizons. Only precision observations of the late-time ringdown signal, where the differences in the quasinormal-mode spectrum eventually show up, can be used to rule out exotic alternatives to black holes and to test quantum effects at the horizon scale.

KW - QUASI-NORMAL MODES

KW - BLACK-HOLES

KW - NONRADIAL OSCILLATIONS

KW - ASTROPHYSICS

KW - STAR

U2 - 10.1103/PhysRevLett.116.171101

DO - 10.1103/PhysRevLett.116.171101

M3 - Letter

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 171101

ER -

ID: 299820008