Evaporating black holes: Constraints on anomalous emission mechanisms

Yuan, Chen; Brito, Richard; Cardoso, Vítor

doi:10.1103/physrevd.104.124024

Cited by 4 publications

(5 citation statements)

References 59 publications

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“…Conveniently, we readily have an explicit expression for t coal , see Eq. (15). However, by construction, ω(t coal ) = ∞.…”

Section: B Analysis Of the Frequencymentioning

confidence: 95%

“…they drive away from each other, which is consistent with Refs. [14,15,23,25]. From now on, we shall always assume, unless otherwise stated, that the two bodies have same mass m(t).…”

Section: Coupling Mass Variation and Gws Emissionmentioning

confidence: 99%

“…One of the most striking sources of GWs is the coalescence of black holes (BHs), which has been exhaustively studied theoretically and has proved to be experimentally fruitful since most of the GW signals detected so far by LIGO and Virgo collaborations come from this phenomenon (see, e.g., [3,4]). Although the most simple and straightforward cases are those of binaries with constant masses, inspiral binaries with time-varying masses and their consequences on the emitted gravitational radiation have also been studied in the literature [5][6][7][8][9][10][11][12][13][14][15]. It is wellknown that the emission of GWs tend to make the two bodies of the binary come closer to each other, until they ultimately coalesce [16].…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10][11][12] for accreting bodies or Refs. [13][14][15] for evaporating BHs in the context of braneworld models and extra-dimensions scenarioswe present a generic analytic solution of the differential equation satisfied by the orbital separation when the mass variation is taken into account. This leads in turn to analytic solutions for the frequency and strain of the emitted GWs.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Competitive effects between gravitational radiation and mass variation for two-body systems in circular orbits

Blachier,

Barrau,

Martineau

et al. 2024

Gen Relativ Gravit

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This work provides, at lower order, general analytical solutions for the orbital separation, merging time, and orbital frequency of binary systems emitting gravitational waves while being submitted to mass variations. Specific features, depending on the exponent of the mass derivative, are investigated in details. Two phenomenologically interesting cases are explicitly considered : i) binaries formed by two light primordial black holes submitted to Hawking evaporation and ii) bodies driven by a Bondi accretion of phantom dark energy. It is shown that three different regimes arise, including an intricate non-monotonic behaviour of the system. We study subtle imprints that could be associated with those phenomena. A careful analysis of the conditions of validity of the different hypotheses performed is finally carried out.

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“…Conveniently, we readily have an explicit expression for t coal , see Eq. (15). However, by construction, ω(t coal ) = ∞.…”

Section: B Analysis Of the Frequencymentioning

confidence: 95%

“…they drive away from each other, which is consistent with Refs. [14,15,23,25]. From now on, we shall always assume, unless otherwise stated, that the two bodies have same mass m(t).…”

Section: Coupling Mass Variation and Gws Emissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Competitive effects between gravitational radiation and mass variation for two-body systems in circular orbits

Blachier,

Barrau,

Martineau

et al. 2024

Gen Relativ Gravit

View full text Add to dashboard Cite

show abstract

“…We find interesting correlation between such spectral break or turning frequencies and DM mass. While previous attempts tried to study GW probe of light DM models [10][11][12], superheavy DM models [13,14] or dark sector models in general [15] (see [16] for review of such possibilities), our proposal gives a unique correlation between DM mass and spectral break frequency for a wide range of DM masses, having the potential of being verified in near future GW experiments like the Laser Interferometer Space Antenna (LISA). Additionally, the same scenario can also explain the observed baryon asymmetry of the universe via leptogenesis.…”

Section: Introductionmentioning

confidence: 98%

Probing Miracle-less WIMP Dark Matter via Gravitational Waves Spectral Shapes

Borah,

Das,

Saha

et al. 2022

Preprint

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We propose a novel probe of weakly interacting massive particle (WIMP) dark matter candidates of a wide mass range which fall short of the required annihilation rates to satisfy correct thermal relic abundance, dubbed as Miracle-less WIMP. If the dark matter (DM) interactions are mediated by an Abelian gauge boson like B-L, its annihilation rates typically remain smaller than the WIMP ballpark for very high scale B-L symmetry breaking. The thermally overproduced WIMP DM is brought within correct relic limits via late entropy dilution from one of the three right handed neutrinos (RHN) present for keeping the model anomaly free and generate light neutrino masses. Such late entropy injection leads to peculiar spectral shapes of gravitational waves (GW) generated by cosmic strings, formed as a result of B-L symmetry breaking. We find interesting correlation between DM mass and turning frequency of the GW spectrum with the latter being within reach of future experiments. The two other RHNs play major role in generating light neutrino masses and baryon asymmetry of the universe via leptogenesis. Successful leptogenesis with Miracle-less WIMP together restrict the turning frequencies to lie only within the sensitivity limits of future GW experiments like Cosmic Explorer and Einstein Telescope.

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Black holes and their horizons in semiclassical and modified theories of gravity

Mann

Murk

Terno

2022

Int. J. Mod. Phys. D

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For distant observers, black holes are trapped spacetime domains bounded by apparent horizons. We review properties of the near-horizon geometry emphasizing the consequences of two common implicit assumptions of semiclassical physics. The first is a consequence of the cosmic censorship conjecture, namely, that curvature scalars are finite at apparent horizons. The second is that horizons form in finite asymptotic time (i.e. according to distant observers), a property implicitly assumed in conventional descriptions of black hole formation and evaporation. Taking these as the only requirements within the semiclassical framework, we find that in spherical symmetry only two classes of dynamic solutions are admissible, both describing evaporating black holes and expanding white holes. We review their properties and present the implications. The null energy condition is violated in the vicinity of the outer horizon and satisfied in the vicinity of the inner apparent/anti-trapping horizon. Apparent and anti-trapping horizons are timelike surfaces of intermediately singular behavior, which manifests itself in negative energy density firewalls. These and other properties are also present in axially symmetric solutions. Different generalizations of surface gravity to dynamic spacetimes are discordant and do not match the semiclassical results. We conclude by discussing signatures of these models and implications for the identification of observed ultra-compact objects.

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Evaporating black holes: Constraints on anomalous emission mechanisms

Cited by 4 publications

References 59 publications

Competitive effects between gravitational radiation and mass variation for two-body systems in circular orbits

Competitive effects between gravitational radiation and mass variation for two-body systems in circular orbits

Probing Miracle-less WIMP Dark Matter via Gravitational Waves Spectral Shapes

Black holes and their horizons in semiclassical and modified theories of gravity

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