Search Results - "Wong, Yvonne Y. Y"

Weaker yet again: mass spectrum-consistent cosmological constraints on the neutrino lifetime by Chen, Joe Zhiyu, Oldengott, Isabel M., Pierobon, Giovanni, Wong, Yvonne Y. Y.

“…We consider invisible neutrino decay ν H → ν l + ϕ in the ultra-relativistic limit and compute the neutrino anisotropy loss rate relevant for the cosmic…”
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Revisiting cosmological constraints on supersymmetric SuperWIMPs by Deshpande, Meera, Hamann, Jan, Sengupta, Dipan, White, Martin, Williams, Anthony G., Wong, Yvonne Y. Y.

“…SuperWIMPs are extremely weakly interacting massive particles that inherit their relic abundance from late decays of frozen-out parent particles. Within…”
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Cosmology favoring extra radiation and sub-eV mass sterile neutrinos as an option by Hamann, Jan, Hannestad, Steen, Raffelt, Georg G, Tamborra, Irene, Wong, Yvonne Y Y

“…Precision cosmology and big-bang nucleosynthesis mildly favor extra radiation in the Universe beyond photons and ordinary neutrinos, lending support to the…”
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Cosmic-Eν: An- emulator for the non-linear neutrino power spectrum by Upadhye, Amol, Kwan, Juliana, McCarthy, Ian G, Salcido, Jaime, Moran, Kelly R, Lawrence, Earl, Wong, Yvonne Y Y

“…ABSTRACT Cosmology is poised to measure the neutrino mass sum Mν and has identified several smaller-scale observables sensitive to neutrinos, necessitating…”
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Probing dark matter interactions with 21cm observations by Mosbech, Markus R, Boehm, Celine, Wong, Yvonne Y. Y

“…Similarly to warm dark matter which features a cut-off in the matter power spectrum due to free-streaming, many interacting dark matter models predict a…”
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Hybrid multi-fluid-particle simulations of the cosmic neutrino background by Chen, Joe Zhiyu, Mosbech, Markus R, Upadhye, Amol, Wong, Yvonne Y. Y

“…Simulation of the cosmic clustering of massive neutrinos is a daunting task, due both to their large velocity dispersion and to their weak clustering power…”
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Gravitational-wave event rates as a new probe for dark matter microphysics by Mosbech, Markus R, Jenkins, Alexander C, Bose, Sownak, Boehm, Celine, Sakellariadou, Mairi, Wong, Yvonne Y. Y

“…We show that gravitational waves have the potential to unravel the microphysical properties of dark matter due to the dependence of the binary black hole…”
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Fitting functions on the cheap: the relative nonlinear matter power spectrum by Hannestad, Steen, Wong, Yvonne Y. Y

“…We propose an alternative approach to the construction of fitting functions to the nonlinear matter power spectrum extracted from $N$-body simulations based on…”
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Axion minivoids and implications for direct detection by Eggemeier, Benedikt, O'Hare, Ciaran A. J, Pierobon, Giovanni, Redondo, Javier, Wong, Yvonne Y. Y

“…In the scenario in which QCD axion dark matter is produced after inflation, the Universe is populated by large inhomogeneities on very small scales…”
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Simulations of axion-like particles in the post-inflationary scenario by O'Hare, Ciaran A. J, Pierobon, Giovanni, Redondo, Javier, Wong, Yvonne Y. Y

“…Phys. Rev. D 105, 055025 (2022) Axions and axion-like particles (ALPs) are some of the most popular candidates for dark matter, with several viable production…”
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Neutrino Mass in Cosmology: Status and Prospects by Wong, Yvonne Y.Y.

“…I give an overview of the effects of neutrino masses in cosmology, focusing on the role they play in the evolution of cosmological perturbations. I discuss how…”
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The cosmic neutrino background as a collection of fluids in large-scale structure simulations by Chen, Joe Zhiyu, Upadhye, Amol, Wong, Yvonne Y. Y

“…JCAP03(2021)065 A significant challenge for modelling the massive neutrino as a hot dark matter is its large velocity dispersion. In this work, we investigate…”
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Spoon or slide? The non-linear matter power spectrum in the presence of massive neutrinos by Hannestad, Steen, Upadhye, Amol, Wong, Yvonne Y. Y

“…Numerical simulations of massive neutrino cosmologies consistently find a spoon-like feature in the non-linear matter power spectrum ratios of cosmological…”
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Invisible neutrino decay in precision cosmology by Barenboim, Gabriela, Chen, Joe Zhiyu, Hannestad, Steen, Oldengott, Isabel M, Tram, Thomas, Wong, Yvonne Y. Y

“…We revisit the topic of invisible neutrino decay in the precision cosmological context, via a first-principles approach to understanding the cosmic microwave…”
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The full Boltzmann hierarchy for dark matter-massive neutrino interactions by Mosbech, Markus R, Boehm, Celine, Hannestad, Steen, Mena, Olga, Stadler, Julia, Wong, Yvonne Y. Y

“…The impact of dark matter-neutrino interactions on the measurement of the cosmological parameters has been investigated in the past in the context of massless…”
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Prior dependence of cosmological constraints on dark matter-radiation interactions by Diacoumis, James A. D, Wong, Yvonne. Y. Y

“…We explore the issue of prior dependence in the context of one-sided constraints on the dark matter-photon and dark matter-neutrino elastic scattering…”
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Interacting neutrinos in cosmology: exact description and constraints by Oldengott, Isabel M, Tram, Thomas, Rampf, Cornelius, Wong, Yvonne Y. Y

“…JCAP 1711 (2017) no.11, 027 We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations…”
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Using CMB spectral distortions to distinguish between dark matter solutions to the small-scale crisis by Diacoumis, James A. D, Wong, Yvonne Y. Y

“…JCAP 1709 (2017) no.09, 011 The dissipation of small-scale perturbations in the early universe produces a distortion in the blackbody spectrum of cosmic…”
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Higher-order massive neutrino perturbations in large-scale structure by Führer, Florian, Wong, Yvonne Y. Y

“…We develop a higher-order perturbation theory for large-scale structure formation involving a free-streaming hot or warm dark matter species. We focus on the…”
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Self-induced conversion in dense neutrino gases: Pendulum in flavor space by Hannestad, Steen, Raffelt, Georg G., Sigl, Günter, Wong, Yvonne Y. Y.

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