196 citations · 3.4k across the 59 of their papers we have counts for
12 papers · 1 filter
Measuring properties of primordial black hole mergers at cosmological distances: effect of higher order modes in gravitational waves
Ken K. Y. Ng, Boris Goncharov, Shiqi Chen +9
Primordial black holes (PBHs) may form from the collapse of matter overdensities shortly after the Big Bang. One may identify their existence by observing gravitational wave (GW) e…
Constraining high-redshift stellar-mass primordial black holes with next-generation ground-based gravitational-wave detectors
Ken K. Y. Ng, Gabriele Franciolini, Emanuele Berti +3
The possible existence of primordial black holes in the stellar mass window has received considerable attention because their mergers may contribute to current and future gravitati…
Warm Dark Matter Constraints Using Milky-Way Satellite Observations and Subhalo Evolution Modeling
Ariane Dekker, Shin'ichiro Ando, Camila A. Correa +1
Warm dark matter (WDM) can potentially explain small-scale observations that currently challenge the cold dark matter (CDM) model, as warm particles suppress structure formation du…
On the single-event-based identification of primordial black hole mergers at cosmological distances
Ken K. Y. Ng, Shiqi Chen, Boris Goncharov +7
The existence of primordial black holes (PBHs), which may form from the collapse of matter overdensities shortly after the Big Bang, is still under debate. Among the potential sign…
Probing multiple populations of compact binaries with third-generation gravitational-wave detectors
Ken K. Y. Ng, Salvatore Vitale, Will M. Farr +1
Third-generation (3G) gravitational-wave (GW) detectors will be able to observe binary-black-hole mergers (BBHs) up to redshift of . This gives unprecedented access to the…
Extreme Dark Matter Tests with Extreme Mass Ratio Inspirals
Otto A. Hannuksela, Kenny C. Y. Ng, Tjonnie G. F. Li
Future space-based laser interferometry experiments such as LISA are expected to detect (100--1000) stellar-mass compact objects (e.g., black holes, neutron stars) falling…
Precise LIGO Lensing Rate Predictions for Binary Black Holes
Ken K. Y. Ng, Kaze W. K. Wong, Tjonnie G. F. Li +1
We show how LIGO is expected to detect coalescing binary black holes at , that are lensed by the intervening galaxy population. Gravitational magnification, , strengthens g…
The Doppler effect on indirect detection of dark matter using dark matter only simulations
Devon Powell, Ranjan Laha, Kenny C. Y. Ng +1
Indirect detection of dark matter is a major avenue for discovery. However, baryonic backgrounds are diverse enough to mimic many possible signatures of dark matter. In this work,…
Dark Matter Velocity Spectroscopy
Eric G. Speckhard, Kenny C. Y. Ng, John F. Beacom +1
Dark matter decays or annihilations that produce line-like spectra may be smoking-gun signals. However, even such distinctive signatures can be mimicked by astrophysical or instrum…
Improved Limits on Sterile Neutrino Dark Matter using Full-Sky Fermi Gamma-Ray Burst Monitor Data
Kenny C. Y. Ng, Shunsaku Horiuchi, Jennifer M. Gaskins +2
A sterile neutrino of ~keV mass is a well motivated dark matter candidate. Its decay generates an X-ray line that offers a unique target for X-ray telescopes. For the first time, w…
Resolving Small-Scale Dark Matter Structures Using Multi-Source Indirect Detection
Kenny C. Y. Ng, Ranjan Laha, Sheldon Campbell +4
The extragalactic dark matter (DM) annihilation signal depends on the product of the clumping factor, <δ^2>, and the velocity-weighted annihilation cross section, σv. This "clumpin…
Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
Ranjan Laha, Kenny Chun Yu Ng, Basudeb Dasgupta +1
Recent evidence for one or more gamma-ray lines at ~ 130 GeV in the Fermi-LAT data from the Galactic Center has been interpreted as a hint for dark matter annihilation to Zγ or Hγ…