264 citations · 372 across the 8 of their papers we have counts for
8 papers
The Anglo-Australian Planet Search. XXIII. Two New Jupiter Analogs
Robert A. Wittenmyer, Jonathan Horner, C. G. Tinney +9
We report the discovery of two long-period giant planets from the Anglo-Australian Planet Search. HD 154857c is in a multiple-planet system, while HD 114613b appears to be solitary…
Capturing Trojans and Irregular Satellites - the key required to unlock planetary migration
Jonathan Horner, F. Elliott Koch, Patryk Sofia Lykawka
It is now accepted that the Solar system's youth was a dynamic and chaotic time. The giant planets migrated significant distances to reach their current locations, and evidence of…
Can Effects of Dark Matter be Explained by the Turbulent Flow of Spacetime?
F. Elliott Koch, Angus H. Wright
For the past forty years the search for dark matter has been one of the primary foci of astrophysics, although there has yet to be any direct evidence for its existence (Porter et…
Spatial variation in the fine-structure constant -- new results from VLT/UVES
Julian A. King, John K. Webb, Michael T. Murphy +5
(abridged) We present a new analysis of a large sample of quasar absorption-line spectra obtained using UVES (the Ultraviolet and Visual Echelle Spectrograph) on the VLT (Very Larg…
Measuring space-time variation of the fundamental constants with redshifted submillimetre transitions of neutral carbon
S. J. Curran, A. Tanna, F. E. Koch +4
We compare the redshifts of neutral carbon and carbon monoxide in the redshifted sources in which the fine structure transition of neutral carbon, [CI], has been detected, in order…
On collisional capture rates of irregular satellites around the gas-giant planets and the minimum mass of the solar nebula
F. Elliott Koch, Bradley M. S. Hansen
We investigated the probability that an inelastic collision of planetesimals within the Hill sphere of the Jovian planets could explain the presence and orbits of observed irregula…
Probability of Collisional Capture of Irregular Satellites Around the Gas Giant Planets and Mass Constraints for the Solar Nebula
F. Elliott Koch, Brad M. Hansen
We investigated the probability that an inelastic collision of planetesimals within the Hill sphere of the Jovian planets could explain the presence and orbits of observed irregula…
Merger of Black Holes in the Galactic Center
F. Elliott Koch, Bradley M. S. Hansen
We present the results of three body simulations focused on understanding the fates of intermediate mass black holes (IBH) that drift within the central 0.5 pc of the Galaxy. In pa…