TL;DR
This paper introduces two new features to REBOUNDx for improved modeling of stellar and planetary evolution, including a parameter interpolator and a tidal dissipation model, validated with stellar evolution data.
Contribution
The paper presents novel integration of a parameter interpolator and a tidal dissipation model into REBOUNDx, enhancing simulation capabilities for stellar and planetary evolution.
Findings
Features are validated against literature results.
Implementation shows high accuracy and efficiency.
Publicly available in the latest REBOUNDx release.
Abstract
To study the post-main sequence evolution of the Solar system and exoplanetary systems more accurately and efficiently, we introduce two new features to REBOUNDx, an extended library for the N-body integrator REBOUND. The first is a convenient parameter interpolator for coupling different physics and integrators using numerical splitting schemes. The second implements a constant time lag model for tides without evolving spins. We demonstrate various uses of these features using stellar evolution data from MESA (Modules for Experiments in Stellar Astrophysics) as an example. The results of our tests agree with several studies in the literature on post-main sequence orbital evolution, and our convergence and performance studies respectively demonstrate our implementations' accuracy and efficiency. These additional effects are publicly available as of REBOUNDx's latest release.
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