I do theoretical / computational research at the boundary with application to the real world. I construct computational models of physical systems so that those systems can be better understood.
In my research, it is essential that we compare our model results with observational / experimental data. No theory lives in a vacuum, and all models must be confronted with what happens in the real world. It is this intersection that drives scientific knowledge.
Thus far, I have done research on three projects
- Human biomechanics
- Eccentricity & Stability in the CKS sample
- Resonances and the 'snow plow effect' in planet-forming disks
Each of these are described below
The California-Kepler Survey (CKS) discovered and characterized over 127 multi-planet exoplanetary systems. Using the machine-learning tool SPOCK and the n-body code rebound, it was possible to study the possible eccentricities of the planets in these systems in order that the systems remain stable.
(Work presented at GLEAM, DDA 2024, Exoplanets V. Paper submitted October 2024. Doty, Weiss, He, Petit 2025)
By combining planetesimal formation + growth + dynamics in a disk, secular resonances and planet-disk-planetesimal interactions allow a nascent giant outer planet to sweep material into the inner disk like a snowplow. This can increase the surface densities by well over 10x, and may help explain the nonuniformities in planetary systems observed in systems containing giant outer planets.
(Paper in preparation for submission to ApJ in early 2025. Doty, Best, Petrovich, et al 2025)
Using 52 infrared reflective markers affixed to overhand throwers, together with ball speed and spin data, it was possible to study the kinetic chain of energy during an overhand throw. It was found that once thrower mass is accounted for, efficiency in shoulder usage is the dominant effect in determining thrown ball speed.
(Work presented at APS EGLS meeting. Paper in preparation for submission in summer 2025)