88 citations · 187 across the 8 of their papers we have counts for
8 papers
A Unified Theory for the Effects of Stellar Perturbations and Galactic Tides on Oort Cloud Comets
Benjamin F. Collins, Re'em Sari
We examine the effects of passing field stars on the angular momentum of a nearly radial orbit of an Oort cloud comet bound to the Sun. We derive the probability density function (…
Levy Flights of Binary Orbits due to Impulsive Encounters
Benjamin F. Collins, Re'em Sari
We examine the evolution of an almost circular Keplerian orbit interacting with unbound perturbers. We calculate the change in eccentricity and angular momentum that results from a…
Co-orbital Oligarchy
Benjamin F. Collins, Re'em Sari
We present a systematic examination of the changes in semi-major axis caused by the mutual interactions of a group of massive bodies orbiting a central star in the presence of ecce…
The Self-Similarity of Shear-Dominated Viscous Stirring
Benjamin F. Collins, Hilke E. Schlichting, Re'em Sari
We examine the growth of eccentricities of a population of particles with initially circular orbits around a central massive body. Successive encounters between pairs of particles…
Protoplanet Dynamics in a Shear-Dominated Disk
Benjamin F. Collins, Re'em Sari
The velocity dispersion, or eccentricity distribution, of protoplanets interacting with planetesimals is set by a balance between dynamical friction and viscous stirring. We calcul…
Chandra X-ray Imaging Spectroscopy of the Young Supernova Remnant Kesteven 75
David J. Helfand, Benjamin F. Collins, E. V. Gotthelf
We present a spatially resolved spectroscopic analysis of the young Galactic supernova remnant Kes 75 (SNR G29.7-0.3) using the Chandra X-ray Observatory. Kes 75 is one of an incre…