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167 papers
Eclipses by Artificial Satellites to Measure the Angular Sizes of Stars
Leo W. H. Fung, Albert Wai Kit Lau, Richard Massey +1
Direct measurements of the angular sizes of stars (other than our Sun) are inherently limited by telescopes' optical diffraction limit. The spatial diffraction limit can be overcom…
Pure Gravitational Wave Estimation of Hubble's Constant using Neutron Star-Black Hole Mergers
Leo W. H. Fung, Tom Broadhurst, George F. Smoot
Here we show how can be derived purely from the gravitational waves (GW) of neutron star-black hole (NSBH) mergers. This new method provides an estimate of spanning the…
Initial On-Sky Performance testing of the Single-Photon Imager for Nanosecond Astrophysics (SPINA) system
Albert Wai Kit Lau, Nurzhan Shaimoldin, Zhanat Maksut +4
This work presents an initial on-sky performance measurement of the Single-Photon Imager for Nanosecond Astrophysics (SPINA) system, part of our Ultra-Fast Astronomy (UFA) program.…
Einstein rings modulated by wavelike dark matter from anomalies in gravitationally lensed images
Alfred Amruth, Tom Broadhurst, Jeremy Lim +10
Unveiling the true nature of Dark Matter (DM), which manifests itself only through gravity, is one of the principal quests in physics. Leading candidates for DM are weakly interact…
Dwarf Galaxies United by Dark Bosons
Alvaro Pozo, Tom Broadhurst, George F. Smoot +4
Low mass galaxies in the Local Group are dominated by dark matter and comprise the well studied ``dwarf Spheroidal" (dSph) class, with typical masses of and also…
Evolution of the afterglow optical spectral shape of GRB 201015A in the first hour: evidence for dust destruction
Toktarkhan Komesh, Bruce Grossan, Zhanat Maksut +3
Instruments such as the ROTSE, TORTORA, Pi of the Sky, MASTER-net, and others have recorded single-band optical flux measurements of gamma-ray bursts starting as early as $\thicksi…