Probing near-horizon fluctuations with black hole binary mergers

Liebling, Steven L.; Lippert, Matthew; Kavic, Michael

doi:10.1007/jhep03(2018)176

Cited by 6 publications

(4 citation statements)

References 51 publications

(69 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been argued [178] (see also [179]) that both effects could be used in order to place upper bounds on the values of these two parameters ∆ and Γ using data from the Laser Interferometer Space Antenna (LISA), with constraints on the value of Γ being the most promising ones. Soft fluctuations of the near-horizon geometry, given by tails (t, r) with compact support, can be also constrained using this part of the waveform [180].…”

Section: Coalescence Of Compact Objectsmentioning

confidence: 99%

Phenomenological aspects of black holes beyond general relativity

et al. 2018

View full text Add to dashboard Cite

While singularities are inevitable in the classical theory of general relativity, it is commonly believed that they will not be present when quantum gravity effects are taken into account in a consistent framework. In particular, the structure of black holes should be modified in frameworks beyond general relativity that aim at regularizing singularities. Being agnostic on the nature of such theory, in this paper we classify the possible alternatives to classical black holes and provide a minimal set of phenomenological parameters that describe their characteristic features. The introduction of these parameters allows us to study, in a largely model-independent manner and taking into account all the relevant physics, the phenomenology associated with these quantummodified black holes. We perform an extensive analysis of different observational channels and obtain the most accurate characterization of the viable constraints that can be placed using current data. Aside from facilitating a critical revision of previous work, this analysis also allows us to highlight how different channels are capable of probing certain features but are oblivious to others, and pinpoint the theoretical aspects that should be addressed in order to strengthen these tests.

show abstract

Section: Coalescence Of Compact Objectsmentioning

confidence: 99%

Phenomenological aspects of black holes beyond general relativity

et al. 2018

View full text Add to dashboard Cite

show abstract

“…However, observations of a pulsar orbiting a black hole have the potential to set even better limits, given the greater observational precision obtainable. BH-pulsar binaries have been argued to provide remarkable tests of quantum gravity [43][44][45][46][47][48][49] on top of their proven record in testing Einstein's general relativity in the case of the Hulse-Taylor BH-pulsar binary PSR B1913+16 [50]. The precision on measured orbital parameters for pulsars is determined by the precision on pulse "times of arrival" (TOA) measurements, which is typically σ T OA ∼ 1µs [51].…”

mentioning

confidence: 99%

Sensitive searches for wormholes

et al. 2021

View full text Add to dashboard Cite

The realm of strong classical gravity and perhaps even quantum gravity are waiting to be explored. In this letter we consider the recently detected triple system composed of two stars and a nonaccreting black hole. Using published observations of this system we conduct the most sensitive test to date for whether the black hole is actually a wormhole by looking for orbital perturbations due to an object on the other side of the wormhole. The mass limit obtained on the perturber is ∼ 4 orders of magnitude better than for observations of S2 orbiting the supermassive black hole at Sgr A*. We also consider how observations of a pulsar could test for whether the black hole in a pulsar-black hole binary is a wormhole. A pulsar in a similar orbit to S2 would be ∼ 10 orders of magnitude more sensitive than observations of S2. For a nominal pulsar-black hole binary of stellar masses, with orbital size similar to that of the Hulse-Taylor binary pulsar, one year of observations could set a mass limit on a perturber that is ∼ 6 orders of magnitude better than observations of a pulsar around Sgr A*. A range of limits between the pulsar-Sgr A* and Hulse-Taylor cases could be obtained for a possible population of pulsar-black hole binaries that may exist near the galactic center.

show abstract

“…Observations of a pulsar orbiting a black hole have the potential to set even better limits, given the greater observational precision attainable. Black hole-pulsar binaries have been argued to provide remarkable tests of quantum gravity [63][64][65][66][67][68][69] on top of their proven record in testing Einstein's general relativity in the case of the Hulse-Taylor binary pulsar PSR 1913+16 [70].…”

Section: Orbiting Starsmentioning

confidence: 99%